List the names the types of soil cover

What does the plate tectonic theroy describe?

The caste system in india was used for what purpose? a) to ensure that all people had an adequate income b) to prevent the rich from taking too much power c) to provide social control and conformity according to one’s birth d) to draft a military capable of defending india from mongol invasion

The states that the process that have been occurring today have been occurring since earth formed. what is it?