1. Nitrogen and Carbon Cycles

2. Warm-up What’s the difference between food chain and food webs?
What the difference between density dependent and density independent factors.
Smart national park is 24 sq miles. The park homes 60 birds and 8 snakes. What is the population density of birds? Snakes?

3. MakeMeGenius Nitrogen Cycle
Nitrogen Cycle Videos
MakeMeGenius Nitrogen Cycle
BrainPOP
Make me genius
Brainpop

4. Copy Diagram

5. Lightning breaks (fixes) N2 and sends N to soil
Over time N released back in
atmosphere. N2 bonds form so
Nitrogen Cycle continues
Lightning breaks (fixes) N2 and sends N to soil
Herbivores consume plants which contains N
Animal waste is deposited on soil which is broken down by decomposers and bacteria. N is returned to soil.
Bacteria converts N in soil to ammonia (NH4) which is used in plants

6. Carbon Cycle Brainpop

7. Extra…