Environmental Science

2. – A gas produced by burning fossil fuels; major greenhouse gas. (Better answer: CarbonDioxide)
4. – A substance that contaminates the environment.
6. – A species no longer in existence
10. – Energy from the sun.
11. – The process of clearing forests for agriculture or development.
13. – Movement of water through the environment in a continuous cycle.
15. – Chemicals used to kill insects and protect crops.

1. – The ability to meet present needs without compromising future generations.
3. – Underground layers that hold groundwater.
5. – The layer of gases surrounding Earth.
7. – Warming of ocean waters causing coral to expel algae and turn white.
8. – The gradual increase in the Earth’s temperature caused by gases trapping heat. (Better answer: Globalwarming)
9. – The variety of living things in an ecosystem.
12. – The wearing away of land by wind, water, or other natural forces.
14. – Rain, snow, or fog that has a low pH due to pollutants.