1. Which of the following is a major human activity that contributes to climate change? A. Planting trees B. Burning fossil fuels C. Using solar energy D. Practicing crop rotation

2. How does deforestation contribute to climate change? A. It increases oxygen levels in the atmosphere B. It reduces the amount of carbon dioxide in the air C. It leads to increased carbon dioxide levels, causing global warming D. It cools down the Earth's surface

3. Which of the following is NOT an impact of climate change on the environment? A. Rising sea levels B. More frequent extreme weather events C. Decreased air pollution D. Melting of polar ice caps