Ch. 3 Lesson 3How Does Matter

Flow in Ecosystems?

•¾ of Earth’s surface- covered w/ water

•different kinds of water different kinds of water ecosystems= different ecosystems= different kinds of animalskinds of animals–ex:ex:

1. wetlands 1. wetlands

(swamps, Everglades)(swamps, Everglades)

2. oceans 2. oceans

(coral reefs, deep sea)(coral reefs, deep sea)

algae• single celled

• carry out photosynthesis

• producers

food web• shows how food chains are

connected

Everglades food web

decay in ecosystems1. scavengers

• feed on dead organisms

• ex: insects

2. decomposers

• ex: fungi & bacteria

• break down dead

organisms & return

nutrients to ground

• decomposers use oxygen to break down food release carbon dioxide into air