Through which three nations do the tigris and euphrates river flow

If a population is growing quickly in a small area then what must increase as well

Exactly what kind of weather conditions would a cold front produce?

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.