The two most common economic activities in africa arethe two most common economic activities in africa are
a.

commercial farming and subsistence farming
b.

subsistence farming and nomadic herding.

c.

hunting and gathering and subsistence farming.

d.

copper mining and diamond mining.

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.

The formation of the planet uranus is estimated to have occurred approximately when?

What is an example of a line segment