1) What is the main cause of global warming? a) Increased volcanic activity b) Solar flares c) Burning of fossil fuels d) Deforestation 2) Which of the following is a greenhouse gas? a) Oxygen b) Carbon dioxide c) Nitrogen d) Hydrogen 3) What is one major effect of rising global temperatures? a) Rising sea levels b) More stable weather patterns c) Decreased rainfall d) Hydrogen 4) Which of the following is a source of renewable energy? a) Coal power b) Solar power c) Nuclear power d) Natural gas 5) What is one major cause of global warming? a) Planting more trees b) Using renewable energy c) Recycling plastic d) Burning fossil fuels

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