Ecology Crossword Puzzle

4. An organism's reaction to the environment
6. Plants use the sun's energy to convert water and carbon dioxide into sugars
9. Area that provides & protects living things
10. A living thing in an ecosystem.
14. Increase in size and complexity of organisms.
16. Plant and animal cells making energy
17. This fish was deliberately introduced to Africa's Lake Victoria.
18. The smallest unit that is able to perform the basic functions of life.
20. Biological process by which new individual organisms - "offspring" are created.
21. All the living and non-living things that interact in a particular environment.
22. A nonliving physical or chemical part of an ecosystem.

1. The movement of water through the environment.
2. The change of a substance from a liquid to a gas
3. An individual living thing, made up of one or many cells.
5. Rain, snow, sleet, or hail that falls to the ground.
7. Plants absorb Fixed Nitrogen from where?
8. 78% of air is what gas?
11. The movement of carbon through Earth's atmosphere and the ecosystems
12. The change from a gas to a liquid
13. The emission of water vapor from the leaves of plants
15. The scientific study of how living things interact with each other and their environment.
19. Where do animals get carbon and nitrogen?