1. #82 Oh deer Lab (save 2 pages) #83 Nitrogen Cycle #84 Carbon Cycle

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. Nitrogen cycle recap
What are two ways atmospheric nitrogen gets into the ground?
According to the diagram, how do animals obtain nitrogen?
According to the diagram what is responsible for breaking down nitrogen and making it usable for plants and animals?
According to brainpop, explain 2 ways extra nitrogen enters the atmosphere
Lightning, industry, animal waste
Animals eat plants that has nitrogen in them
Decomposers… but more specifically nitrogen fixing bacteria
Fertilizers, smoke, sewers, and extra animal waste

7. Carbon Cycle Brainpop

8. Carbon cycle recap What process adds most carbon to the atmosphere?
When an animal or plants dies, what happens to the carbon?

9. Extra…