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  3. question two firstly we need to understand that our globe...

Question: question two firstly we need to understand that our globe...

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QUESTION TWO Firstly, we need to understand that our Globe is a Green House made up of the atmosphere, a layer surrounding the earth held in place by gravity and primarily made up of Nitrogen (78%), Oxygen (21 %), with water and other gases making up the remainder. Scientists now realize that the proportion of these gases has increased significantly over a few hundred years. The real increase began around the time of the Industrial Revolution when we began to burn fossil fuels (coal) in large quantities to power our steam engines. These gases are termed because during the day the earth absorbs heat from the sun, although green house gases because during the day the earth absorbs heat from much of this is radiated back out into space. (a) Describe the functionality of a green house in an agricultural industry (5 marks) (b) State five major green house gases associated with global warming (5 marks) (c) Relating the Earth to the greenhouse, explain (i) Natural greenhouse effect (i) Enhanced greenhouse effect (5 marks) (5 marks)

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