NGSS.HS-LS4-2

What do producers compete for?

• sunlight

• mates

• food

• prey

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The ecological niches of three bird species are shown in the diagram. What is the advantage of each bird species having a different niche?

• As more birds feed higher in the tree, available energy increases.
• More abiotic resources are available for each bird.
• Predators are less likely to feed on birds in a variety of locations.
• There is less competition for food.

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NGSS.HS-LS4-2

The dinosaurs and reptiles were dominant in which Era?

• Precambrian

• Mesozoic

• Paleozoic

• Cenozoic

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NGSS.HS-LS4-2

How do you "win" at natural selection?

• survive

• go extinct

• survive & reproduce

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Which of the following are reasons invasive species are successful?

• They tend to have many offspring (are prolific).

• They only eat a few specific foods.

• They aren't easily dispersed.

• At least one predator lives in their new environment.

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NGSS.HS-LS4-2

A population with very few individuals who are IDENTICAL to one another would be considered ________.

• Healthy

• Unhealthy

• Biodiverse

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Factors that keep a population from growing:

Food, Water

• density dependent limiting factor

• density independent limiting factor

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Who believed that competition for resources would create a "struggle for existence"?

• Thomas Malthus

• Georges Cuvier

• James Hutton

• Jean Baptiste Lamarck

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Overproduction of offspring creates...

• Competition

• Gene Flow

• Migration

• Genetic Drift

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Natural selection is

• survival of the fittest
• humans change
• two species are the same
• more animals survive

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NGSS.HS-LS4-2