Food Web Crossword

5. is a series of steps in which organisms transfer energy by eating and being eaten.
6. each step in a food chain or food web.
7. includes krill.
8. show the relative amount of energy or matter.
10. consume the carcasses of other animals that have been killed by predators or have died of other causes.
12. the total amount of living tissue within a given trophic level.
13. much more complicated than food chains.
14. eat plant leaves, roots, seeds, or fruits.
15. are animals whose diets include both plants and animals.
17. the use of chemical energy to produce carbohydrates.
18. captures light energy and uses it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates.
19. shows the relative number of individual organisms at each trophic level in an ecosystem.
20. photosynthetic algae.
21. chemically breaking down organic matter.

1. organisms that must acquire energy from other organisms.
2. only a small portion of the energy that passes through any given trophic level is ultimately stored in the bodies of organisms at the next level.
3. are the first producers of energy-rich compounds that are later used by other organisms.
4. make their own food.
9. kill and eat other animals..
11. organisms that rely on other organisms for energy and nutrients.
16. feed on detritus particles.