Tiny amounts of minerals are called trifling elements true or false

Fossil fuels such as coal, oil, and natural gas were formed over millions of years by

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

30% of the earths surface is made up of? a. water b. desert c. land d. cities