1. Take out your Dictionary and notes to study for a short QUIZ!!!

2. 1. An organism that obtains energy by converting light into carbohydrates is called a ___________
Fungus
Autotroph
Heterotroph
Chemotroph

3. 2. An organism that consumes a producer is considered to be a __________
Primary Consumer
Secondary Consumer
Carnivore

4. 3. Which of the following is not a primary consumer
Cow
Deer
Grass
Rabbit

5. 4. A farmer produces 2000 units of energy from producers(Beans) If an organism is a tertiary consumer they will obtain_____ units of energy from the original amount.
1800
200 20 2 .2

6. Going the extra link on the food chain
Food Webs
Going the extra link
on the food chain

7. Food Chain
The food chain shows relationships between predator and prey.
Shows simple flow of energy.

9. Lets make a food chain!

10. Problems? Humans screw it up again.
Organisms usually eat more than just one species to account for their energy.
They do not show the complex relationships between all the levels.

11. How can we fix these? Use a food web instead of a food chain.
Advantages-
Shows all relationships in trophic levels
Accounts for change in trophic levels
Actually used by ecologist

12. What is a food web
A diagram that indicates energy flow between organisms in a community.
Arrows in the web show where the energy flows to.    

16. Assignment