how organisms interact with each other and the nonliving environment

The number of different species in an area

A group of similar organisms that can breed and produce fertile offspring.

a species on which other species in an ecosystem largely depend, such that if it were removed the ecosystem would change drastically.

A group of ecosystems that share similar climates and typical organisms

active at night

active during the day

a system of interlocking and interdependent food chains.

series of steps in an ecosystem in which organisms transfer energy by eating and being eaten

make their own food

An organism that cannot make its own food.

A consumer that eats only plants.

A consumer that eats only animals.

An animal that eats both plants and animals

a scavenger, such as an earthworm, that feeds on dead plant and animal matter

An organism's particular role in an ecosystem, or how it makes its living.

species that enter new ecosystems and multiply, harming native species and their habitats

group of individuals of the same species that live in the same area

Non-living

living