Puzzle 2

3. The total amount of greenhouse gases emitted by an individual, organization, or product.
5. Energy produced from flowing or falling water.
7. A resource that can be replenished naturally with the passage of time.
8. A synthetic material made from a wide range of organic polymers.
10. A large body of salt water that covers most of the Earth's surface.
12. The top layer of the earth in which plants grow.
13. An area of land that is saturated with water, either permanently or seasonally.

1. The practice of using water efficiently to reduce unnecessary water usage.
2. Relating to or produced by the internal heat of the earth.
4. A thick layer of ice and snow that covers large areas of the Earth's poles.
6. To convert waste into reusable material.
7. A large, heavy mammal with one or two horns on its snout, native to Africa and Asia.
9. The process of turning organic waste into nutrient-rich soil.
11. A large mammal with a trunk, native to Africa and Asia.