| A | B |
|---|
| food chain | the feeding order of organisms in an ecosystem - straight line from bottom to top |
| food web | all food chains in a community that are linked to one another |
| carnivore | a consumer that eats only animals |
| consumer | an animal that eats plants or other animals |
| herbivore | an animal that eats only plants |
| omnivore | a consumer that eats both plants and animals |
| phytoplankton | microorganism found in the ocean |
| predator | an animal that eats other animals |
| prey | an animal that is eaten by other animals |
| producer | a living thing that uses sunlight to produce food |
| pyramid of numbers | compares population sizes at different levels of a food chain |
| decomposer | a living organism that breaks down dead organism into smaller parts that can be reused by other living organisms |
| community | all the different organisms that live within a habitat |
| habitat | an organisms surroundings consisting of living and nonliving things |
| ecosystem | a community and the environment in which it lives |
| organisms | living things |
| biodiversity | the species variety and balance in an ecological community |
| competition | when two or more organisms need the same resource |
| cooperation | common, mutually benefical among animals in a community |
| mutualism | both organisms benefit from the relationship |
| environment | surroundings |
| niche | the role an organism plays in an ecosystem |
| parasite | an organism that lives on another organism and harms it |
| socialization | the process of learning the rules for interaction within a community group |
| symbiosis | two or more different species live together - positive partnership |
| commensalism | one organism benefits while the other is not affected |
| parasitism | one organism benefits while the other is harmed |
