Earth Day

1. a gas in the atmosphere that is a by-product of burning fuel, also eaten by trees and plants
4. harnesses power from the wind
5. a type of energy from the sun
7. a material used for bottles, glasses, etc that can be recycled an infinite number of times
8. a material that can be recycled, but can't break down naturally
11. using something more than once or for more than one purpose
13. what trees and plants create as a biproduct of photosynthesis that we need to breathe
14. a way of reusing food scraps, which involves allowing them to breakdown and turn into soil
15. made from trees and recyclable

2. involves melting down glass, plastic, paper, or metal to be used again
3. many states and countries have begun to ban these, as they often are littered or thrown away and often cannot be recycled
6. to use less of something
9. a way of measuring how much carbon a person, state, or country is producing
10. a type of energy from running water
12. a Tesla is an example of this eco-friendly alternative to fossil fuels