Biology - Ch. 2
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| nonliving parts of an organism's environment: air currents, temperature, moisture, light and soil are examples | ||
| a community made up of interacting populations in a certain area at a certain time | ||
| portion of Earth that supports life; extends from high in the atmosphere to the bottom of the oceans | ||
| all the living organisms that inhabit an environment | ||
| symbiotic relationship in which one species benefits and the other species is neither harmed nor benefited | ||
| scientific study of interactions between organisms and their environment | ||
| interactions among populations in a community: the community's physical surroundings, or abiotic factors | ||
| place where an organism lives out its life | ||
| a symbiotic relationship in which both species benefit | ||
| role or position a species has in its environment; includes all biotic and abiotic interactions as an animal meets its needs for survival and reproduction | ||
| symbiotic relationship in which one organism benefits at the expense of another, usually another species | ||
| group of organisms all of the same species which interbreed and live in the same place at the same time | ||
| permanent, close association between two or more organisms of different species | ||
| organisms that use energy from the sun or energy stored in chemical compounds to manufacture their own nutrients | ||
| the total mass or weight of all living matter in a given area | ||
| organisms, such as fungi and bacteria, that break down and absorb nutrients from dead organisms | ||
| simple model that shows how matter and energy move through an eccosystem | ||
| model that shows all the possible feeding relationships at each trophic level in a community | ||
| organisms that cannot make their own food and must feed on other organisms for energy and nutrients | ||
| organism that represents a feeding step in the movement of energy and materials through an ecosystem |