Physics

Emeline

23 October, 01:55

Which of the choices below gives a true example of how a natural resource can be renewed? A. When all of the coal is gone from a mine, new coal can be grown in its place. B. When forests have been cut down, new native trees can be planted. C. When an area's natural gas has been used up, oxygen can replace the gas. D. When the Sun is hidden behind clouds, lamps can be used to power solar cells.