science

4. factors are the living or once living organisms.
6. the process where molecules at the surface of liquid water absorb energy to change to a gas.
8. the process of a gas changing to a liquid.
11. species influences the survival of many other species in an ecosystem.
12. pyramid show the amount of energy that moves from one feeding level to the next.
15. fertilization occurs inside a females body
16. break down biotic waste and dead organisms.
18. the practice of using less of a resource so that it can last longer.
19. two species live closely together.

1. factor is a factor that causes a population to stop growing.
2. release oxygen during photosynthesis.
3. is am important plant hormone.
5. is a major life change.
6. is the community of organisms that lives in a particular area.
7. chemical released by one animal ha affects another animal
9. the study of how organisms interact with their environment.
10. how an organism obtains food.
13. resource anything naturally occurring in the environment that humans use.
14. species the first to populate an area.
16. is when growth stops
17. relationship in which one species benefits and the other species is neither helped or harmed.