Which process removes carbon dioxide from the atmosphere.

A. Nitrogen
B. Respiration
C. Humans Breathing
D. Carbonate formation

Sandstones that form in aeolian (wind/desert) environments appear very different from other sandstones, such as those formed in a beach/ shoreline environment and in rivers on land. give three identifying properties for each of the three sandstones that would tell a geologist which depositional environment they formed in. consider things such as the relationship between transportation and grain size, shape, roundness, sorting, fossils and composition.

What is the approximate chemical composition of the solar nebula?

Name the two rivers that run through the fertile crescent. how were the rivers both positive and negative to societies of the fertile crescent?