1. What elements do all living things need?
Carbon
Oxygen
Hydrogen
Nitrogen
Phosphorous

2. Matter (carbon, hydrogen, oxygen, nitrogen, and phosphorous) is
RECYCLED

3. It is just recycled through the ecosystem in different
Matter cannot be
created or destroyed.
It is just recycled through
the ecosystem in different
forms.

4. Water Cycle

5. Which elements do organisms get from the water cycle?
Does local climate affect the water cycle?
How do plants contribute to the water cycle?
Which biomolecules depend on this cycle?

6. Carbon Cycle
Human Activity

7. Which biomolecules depend on this cycle?
Name some things that add
Carbon to the atmosphere
What would happen if plants were removed from
this cycle?
Name some things that can take carbon away
to the atmosphere.
Name some different forms of carbon
Where is most of the carbon stored
at one time?
How are humans affecting
this cycle?

8. Nitrogen Cycle

9. Name some forms nitrogen takes in this cycle.
What biomolecule depends on
this cycle?
How do animals obtain their nitrogen?
How does the nitrogen from animals return to the soil?
What would be the effect of removing bacteria
from this cycle?
What is the role of bacteria in this cycle?
How do plants obtain their nitrogen?

10. Think about how the flow of matter (the cycles) is
different from the flow of
energy in food webs.
PS-THIS IS A BIG ? ON THE
TEST=)