Ecosystems Revision

1. Hunts prey for food and energy
6. Where organisms live together and both benefit from the relationship
9. Food webs are comprised of many food _________
10. Relationship where one organism benefits and the other organism is not affected
11. An example of a decomposer that belongs to the fungi kingdom
13. Cutting down of tress that has a negative impact on the habitats of organisms is known as _____________
14. Living factors in an ecosystem
17. A term that describes the living world
18. Relationship where one organism lives in or on the body of another. One benefits and the other is harmed.
20. An energy __________ shows how the amount of energy available at the top is less than at the bottom

1. A group of living organisms that are the same species, living in the same place at the same time
2. Organisms that break down dead matter and return nutrients to the ecosystem
3. Product of photosynthesis that is not oxygen
4. Ultimate source of energy for producers comes from the ______
5. Reaction that introduces chemical energy into an ecosystem
7. A close physical and long-term relationship between two organisms of different species
8. All the organisms in an ecosystem
12. Place where a population of organisms live
15. Flows through a ecological pyramid
16. Non-living factors in an ecosystem
19. Required for photosynthesis to occur