The original source of all sand is

Geography what land form is created when glaciers erode backwards into the mountainside and form a shape like a shallow bowl?

true or false, Polar orbiting satellites offer the advantage of imaging clouds directly below their orbit, rather than at an angle such as experienced by a geostationary satellite.

What explains the fact that the polarities of rocks alternate multiple times as you move away from the mid-ocean ridge? A. plate tectonics B. paleomagnetism C. subduction zones D. seafloor spreading

Acid deposition would most likely result in which of the following? A. The release of aluminum ions from soil B. An increase in populations of mollusks C. The death of species tolerant of low pH levels D.

Halley's Comet has an orbital period of 76 years. What is the average distance of Halley's Comet from the sun? a. 51 AU b.) 18 AU c. 114AU d. 660 AU e. 38 AU

What map is used to make road and weather map

What were the Egyptian political and religious leaders called? A. kings B. pharaohs C. emperors D. sultans

What do you think what do you notice about population distribution and settlement location in ancient Egypt

How high does the earth's atmosphere extend? A. 100 m B. 1,000 m C. 10 km D. 100km

How to grow plants in space?