Explain why European countries looked to reach the Americas Columbus' voyage.

What group has historically made up the largest portion of immigrants in mexico?

Plants can have a positive and negative effect on the rate of weathering

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.