Cat 4 crosswrod puzzle

3. individual animal, plant, or single-celled life form
5. convert light into chemical energy
6. substance that takes part in and undergoes change during a reaction
8. is a fatty, waxy, or oily compounds
9. conducts water and dissolved nutrients upward from the root
11. convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate
15. chemical substance formed as a result of a chemical reaction
16. biological community of interacting organisms and their physical environment
18. defined as the area of the planet where organisms live, including the ground and the air
19. conducts sugars and other metabolic products downward from the leaves
20. long chainlike molecules composed of a series of nearly identical building

1. the production of offspring by a sexual or asexual process
2. named for the dominant type of vegetation, such as grassland or coniferous forest
4. A single, separate organism (animal or plant)
7. interacting group of various species in a common location
10. found in foods and drinks/sugar molecules
12. made of chemical 'building blocks' called amino acids
13. a material from which an organism grows or obtains its nourishment
14. substance that acts as a catalyst in living organisms
17. group of individuals that belong in the same species and live in the same area