CHANGES IN ECOSYSTEM

What happens to the black-footed ferret population when prairie dogs are exterminated?

• Their population increases

• Their population decreases

• Their habitat expands

• It has no effect

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Why do shark populations decline?

• Because of habitat destruction

• Due to pollution

• Due to climate change

• Because of overfishing

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What is the result of cutting down all the oak trees in an ecosystem?

• Loss of food and shelter for many organisms

• Improved soil quality

• More space for building

• Increased food for insects

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How does an increase in food source affect squirrel populations?

• Has no effect

• Makes them migrate

• Increases their population

• Decreases their population

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What is one negative effect of removing an organism's habitat?

• More food for other species

• Population size reduction

• Improved ecosystem health

• Increased biodiversity

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How do artificial reefs benefit marine organisms?

• They make the water shallower

• They decrease the water quality

• They increase pollution

• They support marine food webs

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What impact does introducing kudzu vines have on an ecosystem?

• It increases native plant growth

• It has no significant impact

• It kills native plants

• It improves soil quality

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Why are wild hogs considered a problem in Texas?

• They decrease erosion

• They improve soil quality

• They plant new trees

• They compete with native organisms for food

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What is a consequence of overgrazing?

• Increased plant growth

• Soil erosion

• Increased animal diversity

• More water retention in soil

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How does the introduction of rabbits in Australia affect other herbivores?

• It has no effect

• It leads to competition for food

• It increases their population

• It provides them with more food

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