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.
Because Asia is a developing country so to earn money they ship things they make to more developed countries
Dividing islands north and South Korea
Their change in position is caused by the movements of the tectonic plates.
They all contain a gravitational pull that allows them to stay together and to keep objects within orbit
