Test Your Environmental IQ Take this quiz to test your knowledge on environmental science and issues related to the environment. rihanna80 published on June 23 Stacked 1/10 What is the main cause of air pollution? Overpopulation Deforestation Burning fossil fuels Industrial waste 2/10 Which of the following is a renewable energy source? Coal Natural gas Solar power Nuclear power 3/10 What is the greenhouse effect? Cooling effect of the Earth's atmosphere Warming of the Earth's atmosphere due to trapped heat Purification of the air by plants A method of organic farming 4/10 Which gas is most responsible for global warming? Oxygen Nitrogen Carbon dioxide Methane 5/10 What is the primary cause of water pollution in rivers and oceans? Plastic waste Sewage discharge Industrial chemicals Agricultural runoff 6/10 What is the main factor contributing to deforestation? Urbanization Climate change Logging and agriculture Wildfires 7/10 Which marine animal is most affected by plastic pollution? Whales Dolphins Sea turtles Sharks 8/10 What is the main cause of coral reef bleaching? Ocean acidification Overfishing Rising sea temperatures Sedimentation 9/10 What is the term for the gradual increase in the Earth's average temperature? Global cooling Heatwave Global warming Climate change 10/10 Which environmental organization focuses on wildlife conservation? Greenpeace Sierra Club World Wildlife Fund Friends of the Earth