Density-Dependent & Density-Independent Factors
Presentation
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Science
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12th Grade
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Practice Problem
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Medium
+1
Standards-aligned
Takara Leornas
Used 15+ times
FREE Resource
4 Slides • 16 Questions
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By Takara Leornas
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Influence a population based on its size.
The larger and denser the population, the stronger the effect. Competition for resources and the spread of disease are examples of density-dependent factors. As the population becomes more crowded, individuals must compete more for food, water, and space, and diseases can spread more quickly.
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Affect a population regardless of its size or density.
Natural disasters like forest fires, floods, or hurricanes are examples. If a forest fire breaks out, it doesn’t matter whether there are 10 or 1,000 organisms in the area – the fire will cause damage based on its severity, not the population size.
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Open Ended
Disease spreads faster in a packed chicken farm than in a small flock. What is the limiting factor?
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Multiple Choice
Disease spreads faster in a packed chicken farm than in a small flock.
Density-Dependent
Density-Independent
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Open Ended
A forest fire burns down trees and kills animals in its path. What is the limiting factor?
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Multiple Choice
A forest fire burns down trees and kills animals in its path.
Density-Dependent
Density-Independent
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Open Ended
There isn’t enough food, so animals must compete to survive. What is the limiting factor?
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Multiple Choice
There isn’t enough food, so animals must compete to survive.
Density-Dependent
Density-Independent
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Open Ended
A hurricane destroys a population’s habitat near the coast. What is the limiting factor?
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Multiple Choice
A hurricane destroys a population’s habitat near the coast.
Density-Dependent
Density-Independent
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Open Ended
More predators start hunting deer because the deer population is large. What is the limiting factor?
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Multiple Choice
More predators start hunting deer because the deer population is large.
Density-Dependent
Density-Independent
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Open Ended
In a crowded pond, fish compete for oxygen and food. What are the limiting factors?
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Multiple Choice
In a crowded pond, fish compete for oxygen and food.
Density-Dependent
Density-Independent
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Open Ended
A volcano erupts, covering the land with ash and killing plants and animals. What is the limiting factor?
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Multiple Choice
A volcano erupts, covering the land with ash and killing plants and animals.
Density-Dependent
Density-Independent
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Open Ended
Too many plants grow in one area, causing competition for sunlight. What is the limiting factor?
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Multiple Choice
Too many plants grow in one area, causing competition for sunlight.
Density-Dependent
Density-Independent
By Takara Leornas
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