1. 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)

2. 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. 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

4. 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)

5.  Shows energy is transferred to next organism.
#4. Food Chains
Food 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

6. Food Webs
#5. A food web consists of many overlapping food chains.

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

8. FOOD IS ENERGY
Energy is used to grow, move, reproduce and other functions.
Energy is used AND lost every time we eat food.

9. 1. What are the 1st level consumers. 2
1. What are the 1st level consumers? 2. What are the 2nd level consumers?
Wolf Bear
Squirrel Deer
Raspberries Acorns Alfalfa

10. 1. The 1st and 2nd level consumer is _____ 2
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

11. An Ocean Energy Pyramid