Demand-side solutions to meeting human needs for fresh water (reduces demand for freshwater) are

Do you guys know all the answers to this

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 an additional type of erosion found at the coast? what does it mean?