What are some of the most serious environmental problems?, What is your opinion on climate change?, Which countries cause the most pollution?, Where will we get our energy when we run out of oil?, Will the climate keep changing or go back to normal?, What are some types of pollution?, What are some ways that you can reduce pollution in this country?, What are the most important environmental issues today?, What is the greenhouse effect?, What are the effects of global warming?, What can be done to stop the extinction of species?, What are the causes of deforestation?, What are non-renewable energy sources?.

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