1. What can you infer from the graph?
Population Change of Species
Over Time
What can you infer from the graph?
Who is the predator and who is the prey?
How do you know this?

2. 6CO2+ 6H2O C6H12O6+ 6O2 What process does this formula represent?
sunlight
chlorophyll
What process does this formula represent?
What is the purpose of this process?

3. 6CO2+ 6H2O C6H12O6+ 6O2 What does this arrow represent?
sunlight
chlorophyll
sunlight
chlorophyll
What does this arrow represent?
Why does it have sunlight and chlorophyll with it?

4. What is missing in the equation?
6___+ 6H2O C6H12O6+ 6O2
sunlight
chlorophyll
What is missing in the equation?

5. What is missing in the equation?
6CO2+ 6H2O C6H12O6+ 6__
sunlight
chlorophyll
What is missing in the equation?

6. 6CO2+ 6H2O C6H12O6+ 6O2 Circle the PRODUCTS Box the RAW MATERIALS
sunlight
chlorophyll
Circle the PRODUCTS
Box the RAW MATERIALS

7. Put the above producer and consumers into a FOOD CHAIN
Hawk
Wheat
Mouse
Snake
Put the above producer and consumers into a FOOD CHAIN

8. What would MOST likely happen if there was a decrease in the number of LIZARDS?

9. What would MOST likely happen if there was an increase in the number of WILD CATS?

10. What would MOST likely happen if there was an decrease in the number of LIONS?

11. Which of the organisms above are SECONDARY CONSUMERS?

12. Which of the organisms above are PRIMARY CONSUMERS?

13. What would happen if the number of mice decreased?

14. What would happen if the number of hawks increased?

17. 3. All energy transformations in an ecosystem begin with –
a scavenger
the sun
a decomposer
a herbivore

18. 4. Which 2 organisms are in competition for the same food source?
coyote & rabbit
hawk & rabbit
hawk & mouse
coyote & hawk

19. In the food web above, which of the following organisms is both a primary and secondary consumer?

20. In the food web to the right, which organism’s food supply would be least affected by a spray that kills large numbers of aphids?
Tomatoes
Lacewings
Lady beetles
Spiders

21. The fungi shown in the picture are decomposers
The fungi shown in the picture are decomposers. Decomposers are an important part of an ecosystem because they -
A. produce oxygen
B. provide food for carnivores
C. break down dead organisms
D. convert sunlight into food energy