What is the name of this rock? (Optional: what number is it on the Moh's hardness scale?)

Describe the most likely weather conditions at indiana / ohio boarder

Which of the following is an environmental cost of agriculture? a. agronomyb. cash cropsc. pollutiond. crop rotation

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