Page 52 - Elfin Fly_4

Date: . .

More Comprehension
Read the text again. Then find the answer.

Where Energy Comes From

Í Main energy resources , , and
Fossil fuels: (1)

Í (2)

Energy Problems

Energy - Fossil fuels will (3) someday.
Resources
- (4) from nuclear power does harm to living

things on the Earth.

Other Energy Sources

- Clean energy: energy from (5) ,

or .

- (6) : energy from crops or trash

Workbook 49