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south american governments are

a. unlimited

b. monarchies

c. limited

d. unstable

What is a compass? how does it work

Explain how a convection current in the earth is formed.

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.