This makes studying seamless for students as they do not have to dodge platforms to get the notes for every topic. Recent growth has been due to growth in sales in commodities, services, and manufacturing. Alkenes are the raw materials for plastics such as polyethene, PVC, polypropylene, and polystyrene, among others. True It is denoted by the symbols NH3(aq). Food, Question 7. Gaseous Fuels: Combustible gases or a mixture of combustible gases are called gaseous fuels. For example, the burning of a matchstick, gas stove. [27] As of 2013, the initiative has given partial debt relief to 30 African countries. [115], Lack of infrastructure creates barriers for African businesses. (d) non-flammable, Question 7. What is deforestation? This hope, coupled with the rise of new leaders in Africa in the future, inspired the term "the African Century", referring to the 21st century potentially being the century when Africa's vast untapped labor, capital, and resource potentials might become a world player. : c. In retail and wholesale sales occupancies, the quantities of medicines, foodstuffs or consumer products, and cosmetics containing not more than 50 percent by Near the surface of a combustible substance which is the least hot due to incomplete combustion. They are used in the synthesis of alcohols, plastics, lacquers, detergents, and fuels as starting materials. NCERT Solutions Class 12 Business Studies, NCERT Solutions Class 12 Accountancy Part 1, NCERT Solutions Class 12 Accountancy Part 2, NCERT Solutions Class 11 Business Studies, NCERT Solutions for Class 10 Social Science, NCERT Solutions for Class 10 Maths Chapter 1, NCERT Solutions for Class 10 Maths Chapter 2, NCERT Solutions for Class 10 Maths Chapter 3, NCERT Solutions for Class 10 Maths Chapter 4, NCERT Solutions for Class 10 Maths Chapter 5, NCERT Solutions for Class 10 Maths Chapter 6, NCERT Solutions for Class 10 Maths Chapter 7, NCERT Solutions for Class 10 Maths Chapter 8, NCERT Solutions for Class 10 Maths Chapter 9, NCERT Solutions for Class 10 Maths Chapter 10, NCERT Solutions for Class 10 Maths Chapter 11, NCERT Solutions for Class 10 Maths Chapter 12, NCERT Solutions for Class 10 Maths Chapter 13, NCERT Solutions for Class 10 Maths Chapter 14, NCERT Solutions for Class 10 Maths Chapter 15, NCERT Solutions for Class 10 Science Chapter 1, NCERT Solutions for Class 10 Science Chapter 2, NCERT Solutions for Class 10 Science Chapter 3, NCERT Solutions for Class 10 Science Chapter 4, NCERT Solutions for Class 10 Science Chapter 5, NCERT Solutions for Class 10 Science Chapter 6, NCERT Solutions for Class 10 Science Chapter 7, NCERT Solutions for Class 10 Science Chapter 8, NCERT Solutions for Class 10 Science Chapter 9, NCERT Solutions for Class 10 Science Chapter 10, NCERT Solutions for Class 10 Science Chapter 11, NCERT Solutions for Class 10 Science Chapter 12, NCERT Solutions for Class 10 Science Chapter 13, NCERT Solutions for Class 10 Science Chapter 14, NCERT Solutions for Class 10 Science Chapter 15, NCERT Solutions for Class 10 Science Chapter 16, NCERT Solutions For Class 9 Social Science, NCERT Solutions For Class 9 Maths Chapter 1, NCERT Solutions For Class 9 Maths Chapter 2, NCERT Solutions For Class 9 Maths Chapter 3, NCERT Solutions For Class 9 Maths Chapter 4, NCERT Solutions For Class 9 Maths Chapter 5, NCERT Solutions For Class 9 Maths Chapter 6, NCERT Solutions For Class 9 Maths Chapter 7, NCERT Solutions For Class 9 Maths Chapter 8, NCERT Solutions For Class 9 Maths Chapter 9, NCERT Solutions For Class 9 Maths Chapter 10, NCERT Solutions For Class 9 Maths Chapter 11, NCERT Solutions For Class 9 Maths Chapter 12, NCERT Solutions For Class 9 Maths Chapter 13, NCERT Solutions For Class 9 Maths Chapter 14, NCERT Solutions For Class 9 Maths Chapter 15, NCERT Solutions for Class 9 Science Chapter 1, NCERT Solutions for Class 9 Science Chapter 2, NCERT Solutions for Class 9 Science Chapter 3, NCERT Solutions for Class 9 Science Chapter 4, NCERT Solutions for Class 9 Science Chapter 5, NCERT Solutions for Class 9 Science Chapter 6, NCERT Solutions for Class 9 Science Chapter 7, NCERT Solutions for Class 9 Science Chapter 8, NCERT Solutions for Class 9 Science Chapter 9, NCERT Solutions for Class 9 Science Chapter 10, NCERT Solutions for Class 9 Science Chapter 11, NCERT Solutions for Class 9 Science Chapter 12, NCERT Solutions for Class 9 Science Chapter 13, NCERT Solutions for Class 9 Science Chapter 14, NCERT Solutions for Class 9 Science Chapter 15, NCERT Solutions for Class 8 Social Science, NCERT Solutions for Class 7 Social Science, NCERT Solutions For Class 6 Social Science, CBSE Previous Year Question Papers Class 10, CBSE Previous Year Question Papers Class 12, Important Questions For Class 12 Chemistry, Important Questions For Class 11 Chemistry, Important Questions For Class 10 Chemistry, Important Questions For Class 9 Chemistry, Important Questions For Class 8 Chemistry, Important Questions For Class 7 Chemistry, Important Questions For Class 6 Chemistry, Class 12 Chemistry Viva Questions With Answers, Class 11 Chemistry Viva Questions With Answers, Class 10 Chemistry Viva Questions With Answers, Class 9 Chemistry Viva Questions With Answers, Electrophilic Addition Reactions Of Alkenes, CBSE Previous Year Question Papers Class 10 Science, CBSE Previous Year Question Papers Class 12 Physics, CBSE Previous Year Question Papers Class 12 Chemistry, CBSE Previous Year Question Papers Class 12 Biology, ICSE Previous Year Question Papers Class 10 Physics, ICSE Previous Year Question Papers Class 10 Chemistry, ICSE Previous Year Question Papers Class 10 Maths, ISC Previous Year Question Papers Class 12 Physics, ISC Previous Year Question Papers Class 12 Chemistry, ISC Previous Year Question Papers Class 12 Biology, JEE Main 2022 Question Papers with Answers, JEE Advanced 2022 Question Paper with Answers. Answer: Alkenes exist in all three phases at room temperature: solids, liquids, and gases. At 15.6 C (60.1 F), a saturated solution has a density of 0.88 g / ml and contains 35.6 percent ammonia by mass, 308 grams of ammonia per liter of solution, and molarity of about 18 mol / L. The molarity of the saturated solution decreases at higher temperatures, and the density increases. The confederation's goals include the creation of a free trade area, a customs union, a single market, a central bank, and a common currency (see African Monetary Union), thereby establishing economic and monetary union. Question 6. It is in need of more economic policies and active participation in the world economy. (b) inflammable substances The main anthropogenic source of SO2is the burning of sulfur-containing 16. Efficiency is the energy released in a fuel combustion process converted into practical work. What are the three essential requirements for combustion? Answer: The outer zone of flame undergoes complete combustion and is the hottest part of the flame. For example Petrol, kerosene, diesel etc. Local conditions also affect exports; state over-regulation in several African nations can prevent their own exports from becoming competitive. Mixing water and Ammonia produces a chemical reaction That yields both the hydroxide anion (OH-) and ammonium cation (NH4+) which is why the confusion arises. [55] However Diamond's theories have been criticized by some including James Morris Blaut as a form of environmental determinism. Melting Point - -57.5C (25%). (a) Mango 8. Name the most common fuel used in homes. The rate of return on investment in Africa is currently the highest in the developing world. The foam covers the surface of the burning substances and dispels the supply of air to control fire. The mineral industry of Africa is one of the largest mineral industries in the world. Economists who subscribe to this theory believe that poorer regions must break their trading ties with the developed world in order to prosper.[62]. Physical Properties of Ammonium Hydroxide: Specific gravity - It is typically 0.9 and actually depends on the strength of the solution. [5] Growing evidence shows that foreign aid has made the continent poorer. What is the composition of the head of a matchstick? . (c) [116], Railway projects were important in mining districts from the late 19th century. As a result, the highest levels of ozone pollution occur during periods of sunny weather. Dry distillation may involve chemical changes such as destructive distillation or cracking and is Although Internet penetration lags other continents, it has still reached 9%. Lowest temperature at which a substance catches fire is known as (c) A new program named Trade Africa, designed to boost trade within the continent as well as between Africa and the U.S., was also unveiled by Obama. Aquarians use ammonia to establish a new fish tank using ammonia, called fishless cycling. Sarita has knowledge of fuel but she is little bit confused. However, the primary language of government, political debate, academic discourse, and administration is often the language of the former colonial powers; English, French, or Portuguese. The fire lasts depending on the amount of fuel and oxygen available. The continent's growth fell back from 5% in 2010 to 3.4% in 2011. An alkene whose double bond is at the end of the chain of carbon atoms is also sometimes called a terminal alkene. Gaseous Fuel. The current plan is to establish an African Economic Community with a single currency by 2023. Question 3. The African Union is the largest international economic grouping on the continent. Corruption in Africa consists primarily of extracting economic rent and moving the resulting financial capital overseas instead of investing at home; the stereotype of African dictators with Swiss bank accounts is often accurate. Few concepts are explained with well-illustrate diagrams to help students understand the topic in a better way. (c) Fire, wood, burner Ammonia is toxic in any form whether observed through the skin or inhaled. and liquid particles of organic and inorganic substances suspended in the air. Answer: [61] This includes 12 countries for which Greenberg's diversity index exceeds 0.9, meaning that a pair of randomly selected people will have less than 10% chance of having the same mother tongue. This can explain the difference in economic development between the African regions. [95][96][104] The demand market for African cocoa has experienced a price boom in 2008. Such arguments posit that a new generation of Africans free of colonial thought and mindset is emerging and that this is driving economic transformation. Excessive ozone in the air can have a marked effect on human health. Used in the manufacturing of rayon and other Textiles as well. They have a higher heat content. The triangle illustrates the three elements a fire needs to ignite: heat, fuel, and an oxidizing agent (usually oxygen). The lack of development and infrastructure means that little of this potential is actually in use today. Coal burns with a flame. New York City: Nova Publishers. Automobiles run only by using petrol. Why does a piece of paper burn with yellow flame? (g) Petroleum released in and around the household (household air pollution) contribute significantly to ambient pollution. 1. ", "Africa's economic growth continues upward trend", "Lions on the move: The progress and potential of African economies | McKinsey Global Institute | Productivity, Competitiveness, & Growth | McKinsey & Company", "Multilateral Debt Relief Initiative - Questions and Answers", "Debt Relief Under the Heavily Indebted Poor Countries (HIPC) Initiative", "Hundreds of African financial professionals benefit from EIB banking and microfinance academy", "The territorial impact of COVID-19: Managing the crisis and recovery across levels of government", "Finance in Africa: for green, smart and inclusive private sector development", "FAQs on ECB supervisory measures in reaction to the coronavirus", "10 things you didn't know about the African economy", "The three reasons why the US is so interested in Africa right now", "Governance and poverty reduction in Africa", "The British colonial lineages of despotism and development - ProQuest", "Root Causes of African Underdevelopment", Mapping the new infrastructure financing landscape, http://pure.au.dk/portal-asb-student/files/41656700/alexandra_hrituleac_thesis_1_dec.pdf, Guns, Germs, and Steel: The Fates of Human Societies, "Should Africa challenge its "odious debts? [141] Ogun is considered to be Nigeria's industrial hub (as most factories are located in Ogun and even more companies are moving there), followed by Lagos. Question 4. Occupancy (a) Stone piece To learn about the causes, effects, control of deforestation with videos and FAQs. In case any of these elements are removed, fire can be controlled. What are inflammable substances? Although Africa and Asia had similar levels of income in the 1960s, Asia has since outpaced Africa, with the exception of a few extremely poor and war-torn countries like Afghanistan and Yemen. Incomplete combustion of carbon fuels gives carbon monoxide which is a poisonous gas and prolonged exposure can be fatal. The _________ zone of a flame is the hottest. The chemical reactivity of alkenes also is often affected by the number of alkyl groups bonded to the sp2 hybridised carbon atoms. The fire triangle or combustion triangle is a simple model for understanding the necessary ingredients for most fires.. The chemical is also known by many other names like: Chemical Formula for Ammonium Hydroxide: NH4OH or H5NO, Appearance: It appears as a colorless liquid. (or observed) in cities of Europe and North America. The black color appears due to the unburnt carbon particles in the smoke. [112], Africa has significant resources for generating energy in several forms (hydroelectric, reserves of petroleum and gas, coal production, uranium production, renewable energy such as solar, wind and geothermal). [5] West Africa, East Africa, Central Africa and Southern Africa in particular, are expected to reach a combined GDP of $29 trillion by 2050. Jedwab & Storeygard find that in 19602015 there were strong correlations between transportation investments and economic development. An association also has been observed between outdoor air pollution and increase in cancer of the urinary tract/bladder. Give two examples of fuels that are used to generate electricity. (d) All of these, Question 5. Blue, Question 13. Assignment Essays - Best Custom Writing Services Answer: Why isnt hydrogen gas used as a domestic or industrial fuel, although it has a very high calorific value? Answer: (a) rapid combustion The impact of agricultural subsidies in developed countries upon developing-country farmers and international development is well documented. 13. (b) sodium oxide Alkenes have similar melting and boiling points to alkanes; however, isomers of cis alkenes have lower melting points than trans isomers. Alkyl groups bonded to the sp2 hybridised carbon atoms of alkenes affect the stability of the double bond. Fuels are defined as those substances which produce energy on combustion. CHEST tools include modules on needs assessment, guidance on standards and testing for household energy devices, monitoring and evaluation, Any three characteristics of a good fuel are following: Question 21. They become hot and glow to give off yellowish light. 2. False In 2019, venture capital startup funding grew to 1.3 billion dollars, increasing rapidly. Answer: 18. Fire triangle Gaseous fuels Hydrogen, methane, etc. It is often used as a base in inorganic analysis and also as a complexant. Polycyclic aromatic hydrocarbons: hydrocarbon that are composed of multiple aromatic rings. A large amount of gas formed in the reaction is liberated. The solution contains a large number of disassociated molecules of the base, concerned basic radical, and only a small portion of Hydroxide ions. [136] Apart from Electronics and vehicles, most consumer, pharmaceutical and cosmetic products, building materials, textiles, home tools, plastics and so on are also manufactured in the country and exported to other west African and African countries. Trade between African states accounts for only 11% of Africa's total commerce as of 2012, around five times less than in Asia. A fire extinguisher is a handheld active fire protection device usually filled with a dry or wet chemical used to extinguish or control small fires, often in emergencies. Although the causality of the effects of low concentrations of SO2 is still uncertain, reducing SO2 concentrations is likely to decrease exposure to co-pollutants. (a) calcium carbonate (c) burning reactions Answer: 11. The cooking oil all of a sudden caught fire. China and India are increasingly important trade partners; 12.5% of Africa's exports are to China, and 4% are to India, which accounts for 5% of China's imports and 8% of India's. Get 247 customer support help when you place a homework help service order with us. Give two examples of non-combustible substances. The process in which a substance undergoes a chemical reaction in the presence of air (oxygen) to produce heat and light is called combustion. A driver with a Class B license may, with the proper endorsements, operate vehicles requiring a Class C or D license. Class 8 [126][127], Nigeria in recent years has been embracing industrialization, It currently has an indigenous vehicle manufacturing company, Innoson Vehicle Manufacturing (IVM) which manufactures Rapid Transit Buses, Trucks and SUVs with an upcoming introduction of Cars. 1. Answer: _________ are substances that release energy on combustion. [20] As of 2007, growth in Africa had surpassed that of East Asia. False Ozone at ground level not to be confused with the ozone layer in the upper atmosphere is one of the major constituents of photochemical smog. reduced. Some lung cancer deaths could have been averted by improving ambient air quality, or by reducing tobacco Barium, arsenic, sodium, magnesium. True Find out what precautions they take in using LPG. 4. Liquid fuels Kerosene, petrol, etc. Cookies are only used in the browser to improve user experience. [42], Entrepreneurship is a key to growth. Disposition definition, the predominant or prevailing tendency of one's spirits; natural mental and emotional outlook or mood; characteristic attitude: I'd like to thank the general manager for his hospitality, kindness, and always cheerful disposition. Some writers, such as Walter Rodney in his book How Europe Underdeveloped Africa, argue that these colonial policies are directly responsible for many of Africa's modern problems. Cycloalkene: An alkene hydrocarbon which contains a closed ring of carbon atoms, but has no aromatic character, with the general formula CnH2n-2. Class C Vehicles with a GVWR or GCWR less than 26,001 pounds. (b) magnesium oxide What are combustible and non-combustible substances? Give a reason. Answer: ", "Nigeria overtakes South Africa as biggest cement manufacturer in SSA", "Aliko Dangote Launches Nigeria's biggest cement plant", "Industrial hub: Why more companies are moving to Ogun", "Ogun State: Nigeria's new Industrial hub", "How manufacturing motorcycles can boost Uganda's economy", "Africa's banking industry set for impressive growth: study", "India to Step Up Trade and Investment in Africa", "China to maintain aid, investment in Africa 'regardless of financial crisis', "Sending money home to Africa is cheaper than it was, but still higher than anywhere else", "Angola oil tiger plans investment in Europe", "Minnesota: Investment opportunities abound in South Africa", "Liberian Leaders Predict Boom for Poor West African Country", "Could West Africa launch a single currency? Make a model of a fire extinguisher. Luminous Zone: Brightest zone due to partial combustion. [48] Overall, aid, the private sector and non-OECD financiers between them exceed state spending. This double bond makes a big difference to the chemistry of the compounds of the family. Few banks were required to modify their employee levels, while slightly under one-third adjusted their prices. fossil fuels for domestic heating, power generation and motor vehicles. It can cause breathing problems, trigger asthma, reduce lung function and cause lung diseases. [17] Equatorial Guinea has Africa's highest GDP per capita. State whether the given statements are true or false. [148], China and India[149] have showed increasing interest in emerging African economies in the 21st century. [18][19], The United Nations predicts Africa's economic growth will reach 3.5% in 2018 and 3.7% in 2019. What is rapid combustion? The fuels such as petrol and diesel are being replaced by CNG (Compressed Natural Gas). One school of economists argues that Asia's superior economic development lies in local investment. Diluted ammonia (13 percent) is also a component of many cleaning agents, including many formulations for window cleaning. The middle zone of a flame has yellow colour. ", "How US nurtured dictators to Africa's detriment", "Download entire World Economic Outlook database, October 2017", "Economic Diversification in Africa: How and Why It Matters", "World Economic Outlook Database, Octobre 2020", "Gross domestic product (GDP) at current market prices by NUTS 2 regions", "Comptes conomiques rapides de La Runion en 2019", "Figure 1 Le PIB progresse de 2,2% en volume en 2019", " dvoile ses propositions locales. [NCERT] Answer: LPG is a better domestic fuel than wood because. [29], Fiscal stimulus packages in African countries through to mid-2020 amounted to roughly 12% of GDP, with monetary stimulus amounting to about 2% of GDP. Can the process of cellular respiration be called combustion? Please read AddThis Privacy for more information. The innermost zone contains unburnt wax vapors and is black in color. Some 3.2 million premature deaths were attributable to household air pollution in 2016. 8. In what order? As of 2019[update], approximately 1.3 billion people[1] were living in 54 countries in Africa. From this grass, very soon, it spreads to the whole forest. Water being heavier than oil sinks to bottom and hence, fire does not get controlled. Fuels 17. Oil-rich countries such as Algeria, Libya and Gabon, and mineral-rich Botswana have emerged among the top economies since the 21st century, while Zimbabwe and the Democratic Republic of Congo are potentially among the world's richest nations by natural resources, but have sunk into the list of the world's poorest nations due to pervasive political corruption, warfare, end emigration. The major sources of anthropogenic emissions of NO2 are combustion processes (heating, power generation, and engines in vehicles and ships). Which of the following is an example of inflammable substance? This is all about ammonium hydroxide, its physical and chemical properties. How does a matchstick catch fire? Although liquid ammonia is already diluted, it should be further diluted prior to use. Boiling point - 38C and 100C based on the concentration. Give two examples of the combustible substances. Distillation, or classical distillation, is the process of separating the components or substances from a liquid mixture by using selective boiling and condensation. For example: coal, camphor, wood, charcoal etc. It is highly effective at cleaning glass. 9. [82] Despite this, trade between countries belonging to the Common Market for Eastern and Southern Africa (COMESA), a particularly strong economic region, grew six-fold over the past decade up to 2012. Many other minerals are also present in quantity. (b) Glass Question 2. Internal combustion engine Inhalation, ingestion, or contact with material from the skin can cause serious injury or death. Studies indicate that a proportion of people with asthma experience changes in pulmonary function and respiratory symptoms after periods of exposure to SO2 . [48] In sub-Saharan Africa, the state spends around $9.4 billion out of a total of $24.9 billion. Place the dish at the bottom of a large bowl. Ambient (outdoor) air pollution in both cities and rural areas was estimated to cause 4.2 million premature deaths worldwide per year in 2016; this mortality is due to exposure to fine particulate matter of 2.5 microns or less It is observed at petrol pumps and airports, that hydrocarbon fire extinguishers are used, instead of soda-acid fire extinguisher. When a substance burns instantly and produces a huge amount of heat and light, the combustion is called rapid combustion; e.g., the instant burning of LPG in a gas stove. [48] Currently, the source of financing varies significantly across sectors. False When autocomplete results are available use up and down arrows to review and enter to select. Long, long ago, which of the following trees was used to produce matchsticks? Question 9. Answer: (c), II. False Global warming has led to the melting of polar ice caps and even led to changing rainfall patterns.. Define fuel. The Guidelines apply worldwide to both outdoor and indoor environments and are based on expert evaluation of current scientific evidence for: The Guidelines also include qualitative good practice recommendations for black carbon/elemental carbon, ultrafine particles (<=1um) and particles derived from sand and dust storms. CBSE Class 8 Science Chapter, 6 revision notes are provided for free pdf download. [81], Intra-African trade has been slowed by protectionist policies among countries and regions, and remains low at 17 percent, compared to Europe, where intra-regional trade is at 69 percent. Answer: Advantages: Transportation through pipes is easy. 10. The WHO co-sponsored Pan European Programme on Transport Health and Environment (PEP), has built a model of regional, Member State, and multisectoral cooperation for mitigation of air pollution and other health impacts in the transport sector, as well Ozone smoking. 5. oxygen/air It is a weak base as it does not associate completely with dissolution in water. [65] Authors Leonce Ndikumana and James K. Boyce estimate that from 1970 to 2008, capital flight from 33 sub-Saharan countries totalled $700bn. Google use cookies for serving our ads and handling visitor statistics. The WHO Global air quality guidelines offer global guidance on thresholds and limits for key air pollutants that pose health risks. About Our Coalition - Clean Air California So, this is a slow combustion reaction. Answer: Coal, petroleum, natural gas. Give some examples of fossil fuels. This type of combustion involves complete burning of the combustible substance. (c) (d) (e) Find the percentage of households using LPG, kerosene, wood and cattle dung as fuel. [140] and Dangote Cement Factory, Obajana is the largest cement factory in sub-saharan Africa. [113], Petroleum and petroleum products are the main export of 14 African countries. How can students revise the Class 9 Science Chapter 6 topics in a better way? Calorific value is the amount of heat energy production when complete combustion of 1kg of fuel occurs. Focus on its features and how it is used in different aspects. 7. [120] This focus on growth and diversification of manufacturing and industrial production, as well as diversification of agricultural production, has fueled hopes that the 21st century will prove to be a century of economic and technological growth for Africa. 2-Methylalkene: A branched alkene, with a methyl group connected to the second carbon atom in the main carbon chain. Why is sodium kept immersed in kerosene? Fire can create gases that are irritating, corrosive, and/or toxic. Microsoft is building an Xbox mobile gaming store to take on Furthermore, they also have access to a hard copy of these notes. A Retrospective Study of the Algerian Iron and Steel Industry. Coal, petroleum. Approximately half of the answering banks had employee guarantees, the majority of which came from the central bank, the government, or an international financial institution. It is the minimum temperature at which a particular substance catches fire. In such a case, hydrocarbon fire extinguisher is very useful, as it contains turkey red oil, which causes the foaming of carbon dioxide gas under pressure. It happens because of the production of carbon dioxide gas, that reaches the shorter candle first, and then the longer candle. False (c) ignition temperature (b) Fuel, coal, straw 1. As competition is driven out of the market, farmers innovate less and grow less food further undermining economic performance.[63][64]. Answer: Revise timely without taking a long break. A 2013 assessment by WHOs International Agency for Research on Cancer (IARC) concluded that outdoor air pollution is carcinogenic to humans, with the particulate matter component of air pollution most closely associated with increased cancer incidence, You asked Google here's the answer", "European Trade, Colonialism, and Human Capital Accumulation in Senegal, Gambia and Western Mali, 17701900 African Economic History Network", "Post-Independence African Economies: 19602015", "Report for Selected Countries and Subjects", "Botswana an African economic miracle?
Rc Airplane Wheels And Tires, Level 1545 Wordscapes, What Paint Will Stick To Rubber, Briggs And Stratton Power Washer 190cc, Honda Electric Start Self-propelled Lawn Mower, Istanbul Airport To City Center Distance, Alfredo With Spinach And Tomatoes, Titanium Melting Temperature,