| A | B |
|---|
| abiotic | nonliving |
| autotroph | makes its own food |
| biodiversity | variety of life |
| biosphere | area of earth that supports life |
| biotic | living |
| biomass | weight of all living things |
| carnivore | consumer that eats consumers |
| carrying capacity | max number of organisms an area can support |
| climax community | most complex ecosystem |
| commensalism | type of symbiosis where one benefits and the other is not helped or harmed |
| community | group of populations |
| competition | fighting for the same resource |
| consumer | must eat another organism for food |
| decomposer | consumer which breaks down waste |
| ecology | study of the interactions between the environment and organisms |
| ecosystem | interacting populations and the abiotic factors that influence them |
| food chain | visual representation of the flow of energy in an ecosystem with one member at each level |
| food web | visual representation of the flow of energy in an ecosystem with many members at each level |
| habitat | place where an organism lives |
| herbivore | consumer that eats only producers |
| heterotroph | organism that must eat to obtain food |
| host | organism hurt by a parasite |
| limiting factor | something that influences the size of a population |
| mutualism | type of symbiosis where both organisms benefit |
| niche | role of an organism in the environment |
| parasite | organism that hurts, but not kills a host |
| pioneer organism | organism that is the first to inhabit an area |
| population | group of organisms of the same species in the same area at the same time |
| predator | organism that hunts and kills prey |
| prey | hunted and killed by a predator |
| producer | organism that makes its own food |
| succession | ecosystems change over time |
| scavenger | consumer that eats other consumers that are already dead |
| symbiotic relationship | two species living together in which at least one benefits |
| trophic level | feeding relationship |
| trophic pyramid | graphical representation of a food chain |
