a single living thing, individual

A group of organisms of one species that interbreed and live together within a defined area

A group of different populations comprised of many species that live together a defined area 

A combination of the communities and the physical (nonliving) environment, all the biotic and abiotic factors 

large area that has a particular climate and particular species of plants and animals that live there

Example: Temperate Deciduous Forest

The biological components of Earth’s systems, all the life supporting portions of the Earth

not derived from living organisms, anything not alive

Examples: water, rock, dirt, air, weather, temperature

relating to or resulting from living things, anything alive or once alive

examples: trees, all plants, animals, bacteria, fungus

the total of an organism's use of the abiotic and biotic resources in its environment, its "ecological role"

population growth that increases rapidly without leveling off, J-shaped curve

population growth that increases and then levels off at the population's carrying capacity, S-shaped curve

the largest population an environment can support, symbolized by the letter K

environmental factors that control population growth

when individuals interact to obtain a limited resource, can be interspecific or intraspecific

when two different populations try to occupy the same niche, one usually out competes the other and ultimately it disappears from the area

when an organism captures and feeds on another organism

a relationship in which BOTH organisms involved benefit and are dependent upon each other

a relationship in which one organism involved benefits and the other is neither harmed nor helped

a relationship in which one organism involved benefits and the other is harmed