How do producers affect an entire ecosystem?

A _________ models how energy is transferred in an ecosystem.

• Food Web

• Food Chain

Which of the following are necessary for plants to produce energy?

• sunlight

• carbon dioxide

• sugar

• water

The source of all energy in a food chain is the

A __________ show the relationships among all species in an ecosystem

• energy pyramid

• food chain

• food web

• environmental change

A model of how food chains are connected is also called a

• food web

• energy flow

A ______________ eats other organisms for energy

What do the arrows in a food chain or food web represent?

Food Chain order: plankton - zooplankton - herring - salmon - killer whale

What is the original source of energy for the Killer Whale

• plankton

• herring

• salmon

• zooplanton

Explain how living things get energy and why they need it.