What type of power generation can cause air pollution? a. wind b. coal c. geothermal d. solar

Depending on the organism the number of in a cell may change

About how many years does it take for one cycle of surface water to become deep water and then surface water again in the oceans? 101001,000

Land conservation is a worldwide priority. there are several methods to prevent the loss of land due to a variety of reasons. which method is not a way to conserve land? a) sea walls b) rainwater harvesting c) limits on clear cuts of forests d) cut and burn methods of clearing land