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Bell Questions What are the 3 energy pyramids? What is biomass?

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Presentation on theme: "Bell Questions What are the 3 energy pyramids? What is biomass?"— Presentation transcript:

1 Bell Questions What are the 3 energy pyramids? What is biomass?
Explain biological magnification. Who is most affected?

2

3 MARINE BIOME Shallow Seas Deep Oceans

4 Taiga/ Northwest Coniferous Forest
Next Class

5 Population Growth Students will be able to:
Define emigration and immigration. Differentiate exponential growth from logistic growth. Differentiate density dependent limiting factors from density independent.

6 Important Characteristics of a Population
Geographic distribution Area inhabited by a population Density Growth Rate

7 Factors that Affect Population Size
# of births # of deaths # individuals entering or leaving

8 Population Density # of individuals per unit area

9 Movement of Individuals
Immigration Movement of individuals into an area Emigration Movement of individuals out of an area

10 Exponential Growth Occurs when a population has:
- Abundant space and food - Protection from predators and disease

11 Logistic Growth As resources become less available -> growth of a population slows or stops How? Birthrate decreases Death rate increases

12 Carrying Capacity Largest # of individuals that environment can support

13 Limiting Factor Factor that causes population growth to decrease

14 Drought & Other Climate Extremes
Density – Independent Density – Dependent Human Disturbances Competition Depend on population size Strong when population is large & dense Affect all populations Regardless of size Population Size Predation Drought & Other Climate Extremes Parasitism & Disease

15 Independent…or…Dependent???
Is It Density Independent…or…Dependent???

16 Hunting Density Dependent

17 Forest Fire Density Independent

18 River Dam Density Independent

19 Competition Density Dependent

20 Drought Density Independent

21 Clear Cutting Forests Density Independent

22 Parasitism Density Dependent

23 Need for Light Density Dependent

24 Hurricane Density Independent

25 Emigration & Immigration
What do they mean?

26 Day # # Boxes sold that day Total Boxes Sold 1 2 4 3 8 16 5 32 6 64 7 96

27 What we look for… Title Axis labeled Even increments
Independent on horizontal axis (x) Dependent on vertical axis (y) Points plotted correctly Graph is neat and line is straight

28 Book Questions – Write with bell questions
Pg. 82 Vocab 3-1 in your own words Vocab 3-2 in your own words – you may choose 9 Draw the “thinking visually” flowchart Pg. 83 Complete questions by writing in a sentence 1, 2, 3, 5, 6, 14, 15, 17, 18, 20


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