1. Wed. 5/1
Human Biology Test
INB Check

2. Pg.53 (yes, skip pg.52 for now) Title page for Chp.18,19 and 20
Write title for each chapter.
3 pictures total
3 key words total
3 colors

3. Thursday 5/2 Contrast abiotic and biotic influences in the biosphere
Interpret the relationships between organisms and their physical environment

4. In: pg.54
What are 3 things that living things need energy for?

5. Pg.55 – set up Cornell notes
Chp.18-Intro to Ecology

6. What is ecology?
Ecology- the study of organisms and their environment.
Reveals relationships between living (biotic) and nonliving (abiotic) parts of the environment.
Abiotic factors include…
Biotic factors include….

7. Levels of organization in ecology
Biosphere- the part of the earth that supports life.
Ecosystem- biotic & abiotic factors interacting in the environment.
Community- all of the populations that interact in an area.
Organisms- individual living things.
Population- group of organisms of the same species that live at the same place.

9. The Biosphere

10. Matter and Energy in Ecosystems
Includes:
1. Matter/nutrient cycling
2. Energy flow

11. Energy flow through the ecosystem.
Energy only moves in one direction through the ecosystem.
It starts with the sun’s energy and moves through trophic levels.
Energy is lost at each level.

12. Trophic levels
Producers or autotrophs- Organisms that get their energy from sunlight.

13. Consumers or heterotrophs- Organisms that eat other living things to get their energy.

14. Types of consumers Herbivores=eat producers.
Carnivores=eat other consumers.
Scavengers=feed on already dead animals.
Omnivores= eat both producers and consumers.
Detritivores (decomposers)=break down and absorb the compounds in all dead organisms.

15. Trophic pyramid
Each organism gets energy from the trophic level below it.
Only about 10% of the energy is transferred—the rest is lost to the environment as heat or wastes.

16. Biomass- Mass of living material at each trophic level.
Can show amount of energy OR biomass at each trophic level.
Biomass- Mass of living material at each trophic level.

17. Organisms are not always at the same trophic level.

18. Food Chains
Show one possible pathway for energy to take through the ecosystem.

19. Food Webs
Show all the possible pathways for energy to take through the ecosystem.

20. Finish Cornell Notes Write 3 questions on left
Write 3-sentence summary at bottom

21. ***Honors*** Pgs.56-57 - 3 column vocab-chp.18
Ecology
Biosphere
Ecosystem
Biotic factor
Abiotic factor
Producer
Biomass
8. Consumer
9. Detritivore
10. Decomposer
11. Trophic level
12. Food chain
13. Food web
14. Biogeochemical cycle

22. Pgs.56-57 - 3 column vocab-chp.18
Ecology
Ecosystem
Biotic factor
Abiotic factor
Producer
Consumer
Detritivore
Herbivore
Carnivore
Omnivore
Trophic level

23. Homework
3 column vocab – Due Monday

24. Out Pg.54
Copy the chart below and draw an example for each level of organization.
Biosphere
Ecosystem
Community
Population
Organism

25. Fri. 5/3
Review how energy flows through living systems through the processes of photosynthesis and respiration.

26. In: pg.58 Levels in the biosphere
Tape in the levels of organization diagrams.
Label each diagram with the appropriate level identifier.

27. Fig.1 – Trophic Pyramid 4 3 2 1

28. Fig. 2 – Food Web
Sharks 4 3 2 1

29. Pg.59 - Energy in the Ecosystem Questions
Use the following 2 diagrams to answer the questions.
Fig. 1
Which trophic level has the least energy—1,2,3 or 4?
Which trophic level has the most biomass--- 1,2 3 or 4?
Which level represents the producers—1, 2, 3 or 4?
What is the name of the trophic level that the snake represents?
What is the name of the trophic level that the grasshopper represents?
What is represented by the faint yellow bar below the flowers?
In this ecosystem, would you expect to find more grasshoppers or mice? Why?
Fig. 2
Is this an example of a food web or food chain? Explain.
Which organism(s) are the producer(s) in this diagram?
Name all of the primary consumers.
Which organism is the top predator?
Name one secondary consumer.
Which organism(s) is photosynthetic?
Name two carnivores.
Is the fish a herbivore, omnivore or carnivore?

30. Homework
Finish Questions
Reminder: Vocab is due Monday

31. Out – pg.58
Forest Food Web
Tape in the diagram of the forest food web.
Add arrows to the forest food web to show the flow of energy through the ecosystem…. Minimum of 15 arrows! (highlight and # them)

32. Mon. 5/6
Review how energy flows through living systems through the processes of photosynthesis and respiration.
Describe Nevada’s biodiversity by regions.

33. ***Honors In: pg.60
Tape in the map of the deserts of North America
Identify and label each desert on the continent.
What are unique characteristics of desert environments?
How would these effect the energy flow (food chains) in deserts?

34. In: pg.60 What are unique characteristics of desert environments?
How would these effect the energy flow (food chains) in deserts?

35. Pg.61-Desert Food Web Analysis Questions
Place your desert organism cards on your whiteboard and draw in the correct arrows with your marker. Use the descriptions provided to determine what the consumers eat.
Copy your whiteboard food web substituting the names of the organisms for the pictures.
Color code the organisms names: Green=producer, Blue=herbivore, Red=carnivore, Black=omnivore
Analysis Questions
Draw and label a trophic pyramid and put the name of each organism from the food web in the appropriate level.
Explain why a trophic pyramid is shaped the way it is.
Why did some organisms need to be placed in multiple trophic levels?
Draw one food chain from the food web.
What is the difference between a food chain and a food web?
What are the top predator(s) of this ecosystem?
You mark off a km2 of desert and count all of the organisms within the marked area.
7. Would you expect to find more Sagebrush or insects?
8. Would you expect to find more Raptors or Lizards?
Explain your answer to # 7 and 8

36. Homework
Analysis Questions

37. Out – pg.60
When energy is transferred from one organism to another some of it is “lost”. What happens to this energy?