Clouds, dew and frost all form because air has become saturated. This condition of saturation is usually caused by: a. lack of convective mixing b. a temperature increase c. an abundance of condensation nuclei d. adding water vapor e. the air being cooled

What id the primary human cause of the global warming a. storage of nuclear fuel rods b. burning of fossil fuels c. building of high-density housing d. violent conflicts over natural resources

The standard deviation of a population is 3.2.what is the margin of error? enter your answer in the box.

How does rain water cause erosion and deposition? a. when acidic water soaks into the ground, water dissolves limestone, resulting in the formation of caves.b. when a river overflows it moves downhill resulting in the formation of caves.c. when it rains, water flows into rivers and streams and moves back to land, resulting in the formation of caves.d. when water empties into lakes, sediment is deposited, resulting in formation of caves.