Explain India's Caste System
What is it? Why did they use it?

The caste system in India is the paradigmatic ethnographic example of caste. It has origins in ancient India, and was transformed by various ruling elites in medieval, early-modern, and modern India, especially the Mughal Empire and the British Raj. It is today the basis of affirmative action programmes in India.The caste system consists of two different concepts, varna and jati, which may be regarded as different levels of analysis of this system.

Air pollution: “combustion results in gases such as nitrogen oxides, nitrogen dioxide and particulates. the main causes of air pollution include transport, domestic combustion and industrial processes. pollutants from these sources can cause problems in the immediate vicinity and a distance away.”

The answer is the magnetosphere.