Name two other methods through which the primary data can be collected apart from direct personal investigation.

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.

Based on the information in the graph, what can you conclude about humans in the world in general?

From where does the solar winds generate