1. Please complete the Food Web Worksheet Part B
Do now activity
Please complete the Food Web Worksheet Part B

2. Section 8-2: trophic levels
Essential Question:
How does energy move through the trophic levels and what happens to it when it is passed from one trophic level to the next?
Learning Target
Describe the movement of energy across trophic levels.
Explain energy distribution when moving from one trophic level to the next.
Section 8-2: trophic levels

3. announcements Biology Tutoring this week: Lunch B (Tuesday & Thursday)
7:00AM (Monday – Friday)
After school Biology Tutoring: Tuesday
Section 7 Quiz Retakes are available until 3/10/17.
Critical Readings due this Thursday!

4. announcements Available Extra Credit: Tissue Box = 2 Points
Starburst Original Jellybeans = 1 Class Pass
Stauffer’s Original Animal Crackers = 2 Class Passes

5. Don’t forget to chunk your notes!

6. Food chains
Food chains show energy moving from the ___ to the __________ to the __________ .

7. Food chains
Food chains show energy moving from the sun to the ___________ to the _________ .

8. Food chains
Food chains show energy moving from the sun to the producer to the _________ .

9. Food chains
Food chains show energy moving from the sun to the producer to the consumer .

10. Each step of a food chain is called a ____________ .
Food chains
Each step of a food chain is called a ____________ .

11. Each step of a food chain is called a trophic level .
Food chains
Each step of a food chain is called a trophic level .

12. A food web connects all the ____ ________ within an ecosystem together
Food webs
A food web connects all the ____ ________ within an ecosystem together

13. A food web connects all the food chains within an ecosystem together
Food webs
A food web connects all the food chains within an ecosystem together

14. Trophic levels
Only about ____ % of the Energy in one level is transferred to the next. 1%
10%
100%
Energy Pyramid

15. Only about 10% of the Energy in one level is transferred to the next.
Trophic levels
Only about 10% of the Energy in one level is transferred to the next. 1%
10%
100%
Energy Pyramid

16. Most of the energy consumed is used by the animal to keep it alive.
Trophic levels
Most of the energy consumed is used by the animal to keep it alive. 1%
10%
100%
Energy Pyramid

17. What is left is released as _______ into the environment
Trophic levels
What is left is released as _______ into the environment 1%
10%
100%
Energy Pyramid

18. What is left is released as heat into the environment
Trophic levels
What is left is released as heat into the environment 1%
10%
100%
Energy Pyramid

19. According to the pyramid, what organism is in the third trophic level?
The Biomass Pyramid
According to the pyramid, what organism is in the third trophic level?
Grass
Grasshopper
Frog
Snake

20. According to the pyramid, what organism is in the third trophic level?
The Biomass Pyramid
According to the pyramid, what organism is in the third trophic level?
Grass
Grasshopper
Frog
Snake

21. The Biomass Pyramid
According to the pyramid, how much energy will the last trophic level gain?
1,000
100 10

22. The Biomass Pyramid
According to the pyramid, how much energy will the last trophic level gain?
1,000
100 10

23. SUNLIGHT !!! Trophic levels Herbivores (Cows) Producers (grass)
Omnivores or
Carnivores
(Humans)
Herbivores
(Cows)
Producers
(grass)
Secondary Consumers
Primary Consumers
Producers
Energy
1% energy available
10% energy available
100% energy available
10 %
Energy
10 %
Energy
SUNLIGHT !!!

24. Please complete the Food Web Worksheet Part C
Do now activity
Please complete the Food Web Worksheet Part C

25. Food web project due next Wednesday