1. What is the main cause of global warming?

Deforestation Plastic Waste Greenhouse Gases

2. Which gas do trees absorb?

Oxygen Nitrogen Carbon Dioxide

3. Which is a renewable source of energy?

Coal Solar Natural Gas

4. What percentage of Earth’s surface is covered by water?

50% 70% 85%

5. Which of the following is biodegradable?

Plastic bottle Banana peel Aluminum can