Uniformitarianism
fossils
radioactive decay
48 million
after
The youngest age of the shale is 910 ka. According to the principle of inclusions, the shale formed before the tephra, so the tephra must be younger than 910 ka.
Answer: wind flows from areas of high to medium pressure at the earth's surface.
Explanation:
Pressure pattern drive wind pattern which in turns drives oceanic pattern.
Wind at the surface of the Earth flows from areas of high to medium pressure. The wind speed is determined by difference in barometric pressure between the linear distance and air columns over which the transition takes place.
A presidential system that is a constitutional, federal republic