ch 11

3. an animal that is hunted and killed by another for food.
4. the ratio between the number of live-born births in the year and the average total population of that year.
6. a particular section, group, or type of people or animals living in an area or country.
9. the natural home or environment of an animal, plant, or other organism.
12. a non-living part of an ecosystem that shapes its environment.
14. describes the role an organism plays in a community.
15. the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
16. a whole with interdependent parts, likened to a living being.
17. is a larger organism that harbours a smaller organism; whether a parasitic, a mutualistic, or a commensalist guest
18. emigration pertains to the leaving of a place of residence or habitat with the intent of living in another place.
19. a biological community of interacting organisms and their physical environment.

1. is anything that constrains a population's size and slows or stops it from growing.
2. is the number of individuals per unit geographic area, for example, number per square meter, per hectare, or per square kilometer.
5. is the process through which populations of living organisms adapt and change.
7. the ratio between deaths and individuals in a specified population and time period
8. s any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment.
10. pertains to the leaving of a place of residence or habitat with the intent of living in another place.
11. the number of people, other living organisms, or crops that a region can support without environmental degradation.
13. a living organism that shapes its environment.