1. Which factor would have the greatest effect on
the flow of energy into an ecosystem?
(1) a large decrease in the amount of sunlight
available
(2) a large increase in the number of carnivores
(3) a small increase in the number of decomposers
(4) a small decrease in the amount of minerals

3. Producer
1st Consumer
2nd Consumer
4th Consumer
Autotroph
Herbivore
Heterotroph
Heterotroph
Carnivore
Heterotroph
Carnivore

4. Human
Depends
Heterotroph
Omnivore

5. Tyto alba—Common Barn Owl

10. QUIZ!
Which organisms from the diagram at right are correctly paired with their nutritional roles?
(1) hawk—decomposer & insect-eating bird—parasite
(2) mouse—autotroph & flower seed—heterotroph
(3) mountain lion—predator & bark beetle—herbivore
(4) grasshopper—carnivore & grass—autotroph