1. Energy Flow in Ecosystems
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2. Essential Questions
How are different components of an ecosystem related to and affected by one another?
How do energy and nutrients cycle through an ecosystem?
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3. Life depends on the sun …with our one notable exception!
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…with our one notable exception!

4. Photosynthesis
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The process by which plants, algae and some bacteria use sunlight and CO2 to produce food.

5. Photosynthesis O2 is a byproduct 6CO2+6H2O+sunlight  C6H12O6+6O2
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Open the presentation that will contain the image slide.
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Click Browse, locate and select the presentation that contains the image slide, and then click Open.
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6. C6H12O6 Glucose Carbohydrate Used for: Metabolism Reproduction Growth
Some is stored in tissue
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7. Some is stored in tissue
C6H12O6
Glucose
Carbohydrate
Used for:
Metabolism
Reproduction
Growth
Some is stored in tissue
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Open the presentation that will contain the image slide.
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On the Insert menu, click Slides from Files.
In the Slide Finder dialog box, click the Find Presentation tab.
Click Browse, locate and select the presentation that contains the image slide, and then click Open.
In the Slides from Files dialog box, select the image slide.
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8. Producer An organism that makes its own food Autotroph
We’re talking about plants!!!
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9. Consumer
An organism that obtains its energy from eating other organisms.
Heterotroph
Primary Consumer
A consumer that eats producers

10. Consumer
An organism that obtains its energy from eating other organisms.
Heterotroph
Primary Consumer
A consumer that eats producers
Secondary Consumer
A consumer that eats primary consumers

11. Consumer
An organism that obtains its energy from eating other organisms.
Heterotroph
Primary Consumer
A consumer that eats producers
Secondary Consumer
A consumer that eats primary consumers
Tertiary Consumer
A consumer that eats secondary consumers

12. Consumer
An organism that obtains its energy from eating other organisms.
Heterotroph
Primary Consumer
A consumer that eats producers
Secondary Consumer
A consumer that eats primary consumers
Tertiary Consumer
A consumer that eats secondary consumers

13. What eats what?

14. Herbivore
A consumer that eats producers

15. Carnivore
A consumer that eats other consumers

16. Omnivore
A consumer that eats both producers and consumers

17. Insectivore
A consumer that eats insects

18. Scavenger
A consumer that eats dead animals

19. Decomposers
An organism that obtains energy by breaking down dead organisms

20. Where does energy come from? What did you have for breakfast?
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What did you have for breakfast?

21. Cellular Respiration
The process by which heterotrophs (consumers) break down food to create energy
C6H12O6 + 6O2  6CO2 + 6H2O + energy
Look familiar?
Photosynthesis 6CO2+6H2O+sunlight  C6H12O6+6O2
All activities burn energy
Including not paying attention to me!
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On the Slides tab, place your insertion point after the slide that will precede the image slide. (Make sure you don't select a slide. Your insertion point should be between the slides.)
On the Insert menu, click Slides from Files.
In the Slide Finder dialog box, click the Find Presentation tab.
Click Browse, locate and select the presentation that contains the image slide, and then click Open.
In the Slides from Files dialog box, select the image slide.
Select the Keep source formatting check box. If you do not select this check box, the copied slide will inherit the design of the slide that precedes it in the presentation.
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22. When one organism eats another, energy is transferred
Energy Transfer
When one organism eats another, energy is transferred
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23. Food Chain
The sequence in which energy is transferred from one organism to another.
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Grass
Vole
Fox
Bear

24. Food Web The Feeding relationships between organisms in an ecosystem
Multiple food chains put together
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On the Insert menu, click Slides from Files.
In the Slide Finder dialog box, click the Find Presentation tab.
Click Browse, locate and select the presentation that contains the image slide, and then click Open.
In the Slides from Files dialog box, select the image slide.
Select the Keep source formatting check box. If you do not select this check box, the copied slide will inherit the design of the slide that precedes it in the presentation.
Click Insert.
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25. To insert this slide into your presentation
Save this template as a presentation (.ppt file) on your computer.
Open the presentation that will contain the image slide.
On the Slides tab, place your insertion point after the slide that will precede the image slide. (Make sure you don't select a slide. Your insertion point should be between the slides.)
On the Insert menu, click Slides from Files.
In the Slide Finder dialog box, click the Find Presentation tab.
Click Browse, locate and select the presentation that contains the image slide, and then click Open.
In the Slides from Files dialog box, select the image slide.
Select the Keep source formatting check box. If you do not select this check box, the copied slide will inherit the design of the slide that precedes it in the presentation.
Click Insert.
Click Close.

26. Trophic Level A step in the transfer of energy in an ecosystem
10% of energy passed on to next trophic level
Fewer organisms at higher trophic levels
Energy loss limits number of trophic levels
4-5 max
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On the Insert menu, click Slides from Files.
In the Slide Finder dialog box, click the Find Presentation tab.
Click Browse, locate and select the presentation that contains the image slide, and then click Open.
In the Slides from Files dialog box, select the image slide.
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27. Energy Pyramid Tertiary Consumer Secondary Consumer Primary Consumer
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Primary Consumer
Producer