USFWS logo

U.S. Fish and Wildlife Service

Endangered Means
There Is Still Time
Ecosystems


 

 

Children learning about ecosystems.

What is an ecosystem?

An ecosystem is a web of living and nonliving parts that is connected and maintained by energy from the sun and nutrient flow. Plants, animals, rocks, soil, air, water, sun, and people are all links in the Earth’s web of life.

Ecosystems can be as small as the pond in your backyard or as large as the Earth.They include wetlands, prairies, coral reefs, and even rotting logs! Continue>>