Ecology Crossword

2. chemical energy used to produce carbohydrates.
4. the amount of energy at each trophic level
6. are the first producers of energy-rich compounds that are later used by other organisms.
7. environmental conditions can vary over small distances.
10. feed on detritus particles.
11. between 66.5° and 90° north and south latitudes.
15. plants, algae, and certain bacteria can capture energy from sunlight or chemicals and convert it into forms that living cells can use.
17. atmospheric gasses trap heat.
20. eat plant leaves, roots, seeds, or fruits.
21. kill and eat other animals.
22. individual.
24. assemblage of different populations that live together in a defined area.
26. group of ecosystems that share similar climates and typical organisms.
30. the scientific study of interactions among organisms and their physical environment.
31. group of individuals that belong to the same species and live in the same area.
32. chemically break down dead organic matter.
36. the day-to-day condition of Earth’s atmosphere.
37. helps with many ecological events that occur are difficult to study directly.
38. any living part of the environment with which an organism might interact.
39. the total amount of living tissue within at each trophic level.
40. organisms that must acquire energy from other organisms by ingesting in some way.
41. organisms that rely on other organisms for energy and nutrients.

1. captures light energy and uses it to power chemical reactions that convert carbon dioxide and water into oxygen and energy-rich carbohydrates.
3. each step in a food chain or food web.
5. any nonliving part of the environment.
8. feeding relationships are much more complicated.
9. located between 23.5° north and 23.5° south latitudes.
12. the relative number of individual organisms at each trophic level.
13. all the organisms that live in a place, together with their physical environment.
14. series of steps in which organisms transfer energy by eating and being eaten.
16. eat both plants and animals.
18. can be used to test hypotheses.
19. often the first step in asking ecological questions.
23. consists of all life on Earth and all parts of the Earth in which life exists.
25. show the relative amount of energy or matter contained within each trophic level in a given food chain or food web.
27. our entire planet, with all its organisms and physical environments
28. between 23.5° and 66.5° north and south latitudes.
29. mixture of floating algae called and attached algae.
33. consume the carcasses of other animals.
34. include krill.
35. refers to average conditions over long periods.