A characteristic that enables a living thing to survive in its environment.

One of Earth's large ecosystems, with its own kind of climate, soil, plants, and animals.

All the populations living in an area.

The study of how living things and their environment interact.

All the living/non-living things in an area and their interactions with each other.

The path of the energy in food from one organism to another.

Any remains or imprint of living things of the past.

Study of the Earth.

The area in which an organism lives.

An animal that eats plants, algae, and other producers.

A rock form when magma cools down and hardens.

Rocks changed by high temperatures and great pressure.

A relationship between two kinds of organisms that benefits both.

The role an organism has in its ecosystem.

Feeds on plants and animals.

A living thing that hunts other living things for food.

A small gnawing mammal.

Rocks created by smaller pieces of rock buried and pressed together.

A class of individuals with common attributes.

The continuous movement of water between Earth's surface and the air, changing from liquid to gas to liquid.

Describes everything that is part of an ecosystem.

Something that is living or was once alive.

Everything that is not living.

Another name for worm composting.

A facility operated by a city or county government that is designed to help us dispose of different types of waste.

A random spot where people go to leave objects that they do not want.

The drying up or rising of water vapor into the Earth's atmosphere.

When water vapor in the air gets cold and turns back into a liquid.

The water that has been collected in the atmosphere until there is so much, it falls back to Earth again.

Changes that occur in an ecosystem over a long period of time.

A nocturnal animal which is the only mammal with wings.

Animals that provided many necessities of life for the Native Americans, such as meat, hides for shelter, clothing, and even tools, and ornamentation from the bones.

An omnivore who hibernates in the winter and breeds during the summer.

A predator identified by its classic bobbed-tail, tufted ears, and long legs.

An amphibian with smooth skin and long limbs for jumping.

A member of the cat family whose prey consists of small mammals and deer.

All the members of one species in an area.

A reptile that helps keep the rodent population under control.

A well-known producer of caviar and can grow to be North America's largest freshwater fish.

An amphibian with warty skin and short limbs.

A cooperative hunter who floats quietly along, paddling with its large webbed feet and scooping up fish in its enormous beak.