Ecosystems and Food Webs

What happens when a new species enters a habitat?

• It always becomes the top predator.

• It will leave immediately.

• It has no impact on the habitat.

• It can change the food web.

What is an ecosystem?

• A type of food chain.

• A collection of nonliving things only.

• Interactions between living and nonliving things in a habitat.

• A group of animals living together.

Why are spider monkeys important to the rainforest?

• They scare away predators.

• They help in seed dispersal.

• They eat all the insects.

• They control the weather.

What could cause the spider monkey population to decline?

• Increased fruit production.

• The arrival of new species.

• A new disease or over-hunting by humans.

• More rain in the rainforest.

What happens if the spider monkey population starts to decline?

• There are more fruits than before.

• The forest grows larger.

• Insects become the dominant species.

• Fewer seeds are dispersed, affecting plant growth.

What is the result of removing one species from a food web?

• It has no significant impact.

• New species will immediately replace it.

• The food web becomes stronger.

• It can cause the collapse of the ecosystem.

How do ecosystems recover from natural disasters?

• They cannot recover.

• By removing all the animals.

• Through human intervention only.

• They naturally tend to return to balance.

What might happen if an ecosystem's balance is severely disrupted?

• It might change forever, with new species moving in.

• It will recover in a few days.

• It will have no effect on human life.

• All species will become extinct.

Why are food webs compared to spiderwebs?

• Because they are easy to see.

• Because they are made by spiders.

• Because they trap animals.

• Because they are delicate and interconnected.

What should we avoid doing to maintain ecosystem balance?

• Planting more trees.

• Disrupting food webs.

• Studying animal behavior.

• Protecting endangered species.