Are fires in Florida helpful or harmful?

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.

According to the earth science reference tables, during which geologic time period were the continents of north america,south america, and africa closest together?

Witch of the following volcano hazards is made up of rocky particles about the size of a grain of sand