This document outlines different types of ecosystems including forest, desert, marine, and freshwater ecosystems. It notes that forest ecosystems contain non-living things like soil and water as well as living plants and animals. The document also lists plains as a type of ecosystem.

1. Ecosystems

2. Forest Ecosystem Non-Living Things: Soil & Water Living Things: Plants & Animals

3. Types of Ecosystems Plain Forest Desert

4. Marine Fresh Water