All the living and nonliving things that surround and affect an organism.

a community of organisms and the physical environment they live in.

the place where an organism lives and can find everything it needs to survive.

all the organisms of the same kind that live together in an ecosystem.

all the populations of organisms that live and interact in an area

a living thing, such as a plant, that can make its own food.

a living thing that cannot make its own food and must eat other living things.

the process in which plants use energy from the sun to change carbon dioxide and water into sugar and oxygen.

a series of organisms that depend on one another for food.

a living thing that gets energy by breaking down dead organisms and animal wastes.

the process of moving weathered rock and soil from one place to another.

a long period of time with very little rain.

a large amount of water that covers normally dry land.

the variety of plants and animals that live in an ecosystem.