Question

Which of the choices below gives a true example of how a natural resource can be renewed? A. When the wind is calm, electric fans can be turned on to make the windmills move. B. When all of the coal is gone from a mine, new coal can be grown in its place. C. When the Sun is hidden behind clouds, lamps can be used to power solar cells. D. When forests have been cut down, new native trees can be planted.

Answer 1

When forests have been cut down, new native trees can be planted.

Answer 2

Answer:

D: When forests have been cut down, new native trees can be planted.

Explanation:

sing electric fans would not help in making wind energy because they would just use up more energy. Electric lamps have the same problem, and they do not produce solar energy to power solar cells. And coal cannot be re-grown--once it is used up, it is gone.

The one example given that would work is planting new trees. Trees can be planted to replace ones that have been cut down.