biology

2. one benefits and one is harmed
3. feeding relationships in which one organism captures and feeds on another
7. eats plants and animal remains and dead matter
8. uses energy from environment to make their own food
13. eats only plants
14. nonliving factors in a ecosystem
22. diagram that shows relative amounts of biomass energy or number of individuals contained within each trophy level of a food chian
25. group of individuals of some species living in the same place and time
26. eats only other animals
27. group of organisms so similar they can interbreed and produce fertile offspring
28. specific role as a specific fulfills in an ecosystem that encompasses all the physical and biological conditions of a species
29. area where organisms live

1. states that no two organisms can occupy the same niche in the same habitat at the same time
4. relies on other organisms for its energy and food supply
5. total amount of living tissue within a given trophy level
6. breaks down organic matter into its chemical components to be recycled
9. a single step or stage in a food chain or ecological pyramid
10. living factors in ecosystem
11. group of ecosystems with the same climate and similar dominant or climax community
12. study of interactions among organisms and their environment
15. group of populations that live together in the same place and time
16. collection of all food chains in an ecosystem
17. both benefit
18. any relationship between two organisms that live very closely with one another
19. organisms that live in a particular area and their nonliving environment
20. collection of all the ecosystems and biomes present on earth
21. series of steps that show a single pathway of matter and energy from producer to top consumer
23. eats both plants and animals
24. close relationship between two species in which one benefits and the other is unaffeted