Week 23 Protecting the Earth

Match each term to its definition.

How do trees affect the atmosphere?

• They clean soil pollution.

• They limit noise pollution.

• They absorb air pollution.

• They reduce water pollution.

How does paving over a grass meadow affect the watershed?

• It causes less rainfall.

• It creates more runoff.

• It improves wildlife habitats.

• It improves plant habitats.

How might overfishing lead to more shark attacks?

• There are fewer fish, so sharks are hungry.

• People who eat seafood smell like fish.

• Sharks become angrier toward humans.

• Attacks only occur against fishing boats.

Three billion people all over the world rely on seafood to eat. This causes overfishing in some areas. What is one way to prevent overfishing and still feed these people?

• build more boats to fish ocean animals

• only allow poor nations to fish in the ocean

• increase the types of ocean species caught

• create “seafood farms” to grow more seafood

How does deforestation affect the biosphere?

• It increases animal habitats.

• It causes rivers to shrink

• It removes habitats.

• It pollutes the ocean.

Burning fossil fuels can lead to what kind of pollution?

• water pollution

• air pollution

• soil pollution

• light pollution

Street lights and bright neon signs are what kind of pollution?

• water pollution

• air pollution

• soil pollution

• light pollution

Open response: Study the image. How might plastic dropped by the boy affect fish in a lake below?