1) What is global warming? a) Increasing temperature in Earth's atmosphere b) Increasing rain rates in Earth c) Decreasing temperature in a city 2) Without the Greenhouse Effect the Earth would be too? a) warm b) cold c) nothing happens 3) What is the mixture of gases surrounding the Earth called? a) atmosphere b) carbon c) wind 4) Which of the following is a consequence of global warming? a) deforestation b) increase  forest fires and drought c) world war 5) Which is NOT a greenhouse gases? a) methane b) nitrous oxide c) halogen 6) What is Ozone layer? a) it cleans the air b) It acts as a shield of the Earth c) give us protection from rain

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