What are the characteristics of a spiral galaxy

Amountain created from tectonic activity would be considered which type of landform ? a) primary landform b) secondary landform

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.

This word for a bug or malfunction was popularized in the 1962 book into orbit by the mercury astronauts