How long has it been since Africa and North America were adjacent to each other?How far apart have Africa and North America moved since you were born?What assumption did you make in order to complete these calculations? Why did you make this assumption? (Hint: Do you think that the movement is always at the same speed throughout time? Do you think all parts of the spreading seafloor spread at the same speed?)

How has industrialization hurt the forest of europe

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.

Equilateral triangle pbj is inscribed in a circle as shown. determine the measure of arc pjb.