Reading comprehension: Three Cheers for Trees

Trees give us oxygen to breathe.

Cars and busses don't cause pollution.

The pollution acts like a ___________ around Earth. It makes Earth hotter.

If we have a small carbon footprint, Earth will be healthier.

You can ___________ your clothes by giving them to your younger cousin.

When fossil fuels are burned they couse ____________ .

This sign means ...

You should turn off the lights when you don't use them.

A carbon footprint is how much you change ___________ by using energy.

Coal, oil and natural gas are fossil ____________ .

In summer trees keep us cool.

You can make your carbon footprint smaller when you ride your bike to school.

Eating meat is healthy for Earth.