| A | B |
|---|
| habitat | biotic and abiotic factors in the area where an organism lives |
| niche | food, behavior, abiotic conditions an organism needs to survive |
| competition | when two organisms compete for the same resources |
| predation | one organism eats another |
| symbiosis | close ecological relationship between 2 or more organisms of different species |
| mutualism | symbiosis when both organisms benefit |
| commensalism | symbiosis when 1 organism benefits, the other is not affected |
| parasitism | symbiosis when one organism is harmed |
| population density | measurement of the # of individuals in an area |
| producer | organism that makes its own food through photosynthesis |
| consumer | organism that cannot make its own food |
| scavenger | organism that feeds on dead animals |
| decomposer | organism that feed on decaying plant and animal matter and animal waste |
| herbivore | consumer that eats only plants |
| carnivore | consumer that eats only meat |
| omnivore | consumer that eats both plants and animals |
| predator | consumer that captures and eats other consumers |
| prey | consumer that is captured and eaten by a predator |
| limiting factor | condition or resource that limits the size of a population |
| biotic factors | all the plants and animals in an ecosystem |
| abiotic factors | all the non-living things in an ecosystem such as water, sunlight, temperature, rainfall, soil, air and other nutrients |
