Across
- 2. Coal, oil, natural gas, and other fuels that are ancient remains of plants and animals.
- 8. limitation or restriction
- 9. A means of solving a problem or dealing with a difficult situation
- 11. consistency of measurement
- 12. Reservoir A place where carbon is stored.
- 14. A mixture of gases that surrounds a planet or moon.
- 15. Cycle The organic circulation of carbon from the atmosphere into organisms and back again
- 16. Consists of all life on Earth and all parts of the Earth in which life exists, including land, water, and the atmosphere.
- 17. how good or bad something is
- 19. A measure of the relationship In which one variable directly influences a second.
- 23. the rigid outer part of the earth, consisting of the crust and upper mantle.
- 24. Overall weather in an area over a long period of time
Down
- 1. increase in the concentration of acid
- 3. All the water at and near the surface of the earth
- 4. gases in the atmosphere that trap energy and warm the Earth
- 5. One variable that is changing at the same time as another.
- 6. a principle or standard by which something may be judged or decided
- 7. amount
- 10. A substance in the environment that is useful to people.
- 13. pertaining to a sense of beauty or art
- 18. Sink A natural environment that absorbs and stores more carbon dioxide from the atmosphere than it releases
- 20. A scientific process that involves the systematic and careful collection of data.
- 21. the solid part of the earth consisting of the crust and outer mantle
- 22. an alternative that we sacrifice when we make a decision