| A | B |
|---|
| food web | 1. all the feeding relationship that exist in an ecosystem. |
| niche | 2. an organism¡¯s habitat, food, and mode of interaction with biotic and abiotic parts of the ecosystem |
| microenvironment | 3. small area, within an environment, varying in temperature or moisture. |
| biosphere | 4. terms for all of the world¡¯s land and water ecosystems |
| climax community | 5. final stage of success ional development |
| taiga | 6. It is the largest of the world¡¯s biomes. The soil is wet and acidic |
| tundra | 7. Polar bears live in this biome. Unbroken daylight in summer allows nonstop feeding. |
| omnivore | 8. animal that eats both plants and animals |
| commensalism | relationship in with a parasite benefits from a host without either harming or helping the host. |
| ecosystem | interactions of a community with its environment |
| trophic level | a feeding step in the transfer of energy among the organisms in an ecosystem. |
| herbivore | plant eater, a first-order consumer |
| desert | region that has less than 25 cm of rainfall per year. |
| limiting factor | a circumstance that keeps organisms form reaching their biotic potential. |
| predation | the feeding of one organism upon another |
| interspecific competition | competition among populations of different species for the same resources |
| intraspecific competition | the competition between members of the same species for the same resources |
| carrying capacity | The greatest number of individuals in a population that a given environment can support under certain conditions |
| biotic potential | The highest rate of reproduction of a population under ideal conditions |
| population density | The size of a population that occupies a given area at any given point in time. |
