100 points
what chicago grow into a major city in the 1800s?

a. the boom in canal building and railroad building

b. its incorporation of other cities' hinterlands

c. the development of wealth-producing service industries

d. its location near large oil and coal deposits

What is a reasonable action that provides safe water for communities?

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.

Acontinental polar air mass foms in