Why is it so important for astronauts to make sure that they keep things clean in outer space?

Many areas surrounding the caspian sea contain important a. rare minerals b. forestry resources c. gold and silver mines d. oil and natural gas fields

Which of the following physical characteristics best explains the climate of the area that is circled in black on the climate map above?

What do the arrows indicate? air moves in a direction that creates land breezes.air above land warms faster than air above water.air blows over long distances in a continual straight path.air pressure remains the same while cycling over land and water.