Changes to Ecosystems

What happens to the organisms in an ecosystem when humans build a town?

• They adapt to live with humans

• Their population increases

• They are relocated to a safer place

• It negatively impacts them

Why do black-footed ferrets suffer when prairie dogs are exterminated?

• They become the next target for extermination

• They lose their homes

• They have to compete with other predators

• They lose their primary food source

What is the result of overfishing on shark populations?

• Sharks migrate to other areas

• Shark populations decline

• Sharks adapt by finding new food sources

• Shark populations increase

What happens to consumers when producers are removed from an ecosystem?

• Their population increases

• They find food elsewhere

• They may have to leave or die

• They start producing their own food

How does an increase in food source affect squirrel populations?

• Population increases

• Population decreases

• It has no effect

• They migrate to new areas

What is the impact of removing an organism's habitat?

• It improves the ecosystem's health

• It has no significant impact

• New habitats are created

• Population size reduces

What effect does introducing kudzu vines have on native plants?

• It kills them

• It increases their population

• It has no effect

• It helps them grow

Why are wild hogs considered a problem in Texas?

• They are endangered

• They are not native to Texas

• They help control plant populations

• They compete with native organisms for food

What is a consequence of overgrazing by rabbits in Australia?

• Increased plant growth

• More food for other herbivores

• Soil erosion

• Improved soil quality

How does the removal of plants by rabbits affect the soil?

• It becomes more fertile

• It can be washed away

• It attracts more rabbits

• It increases in volume