Drive less. An __ in the use of buses and other public transportation will help save ___.

Burning coal in electric power plants has ___ the earth's temperature getting hotter.

Many places are having more ___ weather, such as hurricanes, drought, and cold waves.

_____ of electricity is important for the future.

The temperature is rising because of ___.

The situation could be exacerbated by the rise in ___.

A famous professor ___ that book.

Honey ____ bees.

The kids ____ the police.

The government ___ many schools.

The experiment ___ by the scientists of this country.