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Bell Questions What are the 3 energy pyramids? What is biomass?
Explain biological magnification. Who is most affected?
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MARINE BIOME Shallow Seas Deep Oceans
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Taiga/ Northwest Coniferous Forest
Next Class
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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.
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Important Characteristics of a Population
Geographic distribution Area inhabited by a population Density Growth Rate
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Factors that Affect Population Size
# of births # of deaths # individuals entering or leaving
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Population Density # of individuals per unit area
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Movement of Individuals
Immigration Movement of individuals into an area Emigration Movement of individuals out of an area
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Exponential Growth Occurs when a population has:
- Abundant space and food - Protection from predators and disease
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Logistic Growth As resources become less available -> growth of a population slows or stops How? Birthrate decreases Death rate increases
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Carrying Capacity Largest # of individuals that environment can support
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Limiting Factor Factor that causes population growth to decrease
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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
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Independent…or…Dependent???
Is It Density Independent…or…Dependent???
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Hunting Density Dependent
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Forest Fire Density Independent
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River Dam Density Independent
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Competition Density Dependent
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Drought Density Independent
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Clear Cutting Forests Density Independent
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Parasitism Density Dependent
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Need for Light Density Dependent
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Hurricane Density Independent
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Emigration & Immigration
What do they mean?
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Day # # Boxes sold that day Total Boxes Sold 1 2 4 3 8 16 5 32 6 64 7 96
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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
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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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