Question 1

How does a decrease in rainfall affect the population of plants in an ecosystem?

Accepted Answer

A decrease in rainfall can reduce plant populations due to limited water availability.

Answer

A decrease in rainfall causes plant populations to double.

Answer

A decrease in rainfall increases plant growth because it provides more sunlight.

Answer

A decrease in rainfall does not affect plants in an ecosystem.

Question 2

What is one likely consequence of introducing a new predator to an ecosystem?

Accepted Answer

The population of prey species may decrease.

Answer

New predators will have no impact on existing species.

Answer

The population of prey species will increase indefinitely.

Answer

The ecosystem will become more plant-dense.

Question 3

What could happen to a fish population if the water temperature in their ecosystem increases significantly?

Accepted Answer

The fish population may decline due to stress and reduced oxygen levels.

Answer

Water temperature changes do not affect fish.

Answer

The fish population will grow twice as fast.

Answer

Fish will develop the ability to live on land.

Question 4

What effect might pollution have on an aquatic ecosystem?

Accepted Answer

Pollution can lead to a decrease in water quality, harming aquatic life and reducing populations.

Answer

Aquatic ecosystems are completely unaffected by pollution.

Answer

Pollution makes the water too clean, which is harmful to aquatic life.

Answer

Pollution increases the population of aquatic life by providing nutrients.

Question 5

What impact does deforestation have on animal populations within a forest ecosystem?

Accepted Answer

Deforestation can lead to habitat loss, resulting in a decline in animal populations.

Answer

Deforestation encourages animals to become aquatic.

Answer

Deforestation causes an increase in animal populations due to more space.

Answer

Deforestation has no impact on animal populations in the forest.

Question 6

What could happen to bird populations if a large area of wetlands is drained for development?

Accepted Answer

Bird populations may decrease due to loss of habitat and nesting grounds.

Answer

Draining wetlands provides more food resources for birds.

Answer

Bird populations remain unaffected by wetland drainage.

Answer

Bird populations will increase because they prefer urban areas.

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