What is an ecosystem? An ecosystem is all non living and living things in an environment and how they react. they can be as large as a forest and as small as a drop of water. Animals in the ecosystem interact in many ways.

Living parts of a ecosystem are the animals and plants.

Trees provide shelter for birds squirrels and other living things.

Things that live in the trees help spread seeds

Rocks soil water and sunlight are examples of non living parts of the ecosystem.worms and insect help the ecosystem by making tunnels that help air and water get into the soil