Energy Flow*Energy Roles: 1. Producer – an organism that can

make its own food. Examples = plants, algae 2. Consumer – an organism that

must eat other organisms for ENERGY. (4 types)

4 Types of Consumers:1. Herbivores – consumers that only eat

plants = 1st level consumer

2. Omnivores – consumers that

eat both plants and animals =

1st, 2nd or 3rd level consumers

3. Carnivores – consumers that only eat

other animals = 2nd or 3rd level consumers

4. Scavengers – carnivores that eat dead animals =2nd or 3rd level consumers

Examples: Vultures, crabs, catfish

Energy Roles (continued) 3. Decomposers – an organism

that breaks down wastes and dead organisms and returns the raw materials back to the environment.

Examples: Bacteria, molds, fungi (mushrooms)

#4. Food ChainsFood Chain – a series of events in

which one organism eats another to gain ENERGY.

Producer 1st level consumer 2nd level consumer 3rd level consumer.

Shows energy is transferred to next organism.

Tree -> Ant -> Bird -> Cat

Food Webs#5. A food web consists of many

overlapping food chains.

Energy Pyramid

A diagram that shows the amount of energy available to producers and consumers at different levels.

FOOD IS ENERGYEnergy is used to grow, move,

reproduce and other functions.

Energy is used AND lost every time we eat food.

1. What are the 1st level consumers?2. What are the 2nd level consumers?

Wolf Bear

Squirrel Deer

Raspberries Acorns Alfalfa

1. The 1st and 2nd level consumer is _____2. The 2nd and 3rd level consumer is _____

Great Blue Heron

Bluegills (fish) Turtle

Minnows Snails

Phytoplankton Algae

An Ocean Energy Pyramid