What are some of the ways through which people earn a living in rainforests? How a planted forest is different than primary forest?
Why do we need more planted forests?
Why urban forests are becoming so common in major cities of the world?

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