1. Bellringer
Send up 1 person from your table group to check their chart with my key for the respiration breakdown chart and worksheet I gave out last class.

2. Learning Targets
Demonstrate the interdependence of photosynthesis and cellular respiration showing how they provide most of the energy for life processes.
Describe the role of photosynthesis and cellular respiration as important components of the carbon cycle.
Relate energy pyramids to food chains and trophic levels.
Explain the conservation of matter and energy between organisms and the environment.

3. Energy Flow

4. Energy Flow (Trophic Levels)
Energy Flow (Trophic Levels)
Producers- make their own food
Consumers- get energy from consuming producers or other consumers

5. 
Producers
Producers- capture energy from sunlight or chemicals and use the energy to produce food.
Producers are autotrophs- they make food from their environment

6. 2 main types of autotrophs
2 main types of autotrophs
One type gets energy from the sun-by photosynthesis
Another type gets energy without light- by chemosynthesis

7. Consumers
Consumers are heterotrophs- get energy from other organisms

8. Pair Share: Give an Example of each
Types of Consumers
Herbivores- eat only plants
Carnivores- eat animals
Omnivores- eat both plants and animals
Detritivores- eat dead matter (plants and animals)
Pair Share: Give an Example of each

9. Feeding Relationships
Feeding Relationships
Energy flows through an ecosystem in one direction from:
1. the sun or inorganic compounds
2. To autotrophs (producers)
3. To heterotrophs (consumers)
Decomposers get energy from decomposing dead organisms

10. 
Food Chain- a series of steps in which organisms transfer energy by eating or being eaten.
Food Web- A network of feeding relationships.
(More realistic than a food chain)

11. Food Web Arrows show energy flow!

12. If all the hares were removed
What would happen
If all the hares were removed
From this community?

13. Food Webs can become very complex!

14. 
Trophic levels
Each step in a food chain or a food web is called a trophic level.
Producers are the first trophic level
Consumers are the second, third, or higher trophic level
Each trophic level depends on the one below for energy

15. 
Energy Pyramid
Only part of the energy stored in one level can be passed to the next- most energy is consumed for life processes (respiration, movement, etc., and heat is given off)
Only 10% of the energy available within one trophic level is transferred to organisms in the next trophic level 

16. 
Biomass Pyramid
Biomass- the total amount of living tissue within a given trophic level.
A biomass pyramid represents the amount of potential food available for each trophic level in an ecosystem. 

18. 
All Heat in the End
At each trophic level, the bulk of the energy received from the previous level is used in metabolism
This energy is released as heat energy and lost to the ecosystem
Eventually, all energy is released as heat

19. 
Carbon Cycle
Carbon moves through the atmosphere and food webs on its way to and from the ocean, sediments, and rocks
Sediments and rocks are the main reservoir (storage)

20.  Carbon in Atmosphere Atmospheric carbon is mainly carbon dioxide
Carbon dioxide is added to atmosphere
Aerobic respiration, volcanic action, burning fossil fuels, decomposition of organic materials
This adds to green house affects
Removed by photosynthesis

22. Think about it…
Grab a sheet of paper from the front table: Discuss with your table partner and draw how photosynthesis and cellular respiration provide most of the energy for life processes.
Your drawing should have the following in it:
respiration equation, photosynthesis equation, chloroplasts, chlorophyll, mitochondria, autotroph, heterotroph, stomata, roots, water, carbon dioxide, glucose, sunlight, oxygen, ATP