A teacher was explaining the different layers of the atmosphere. She started with the lowest zone immediately above the Earth's surface, whose height varies from about 8 kilometres at the poles to 18 kilometres near the equator. Which layer is the teacher discussing?

Which of the following events is considered a major turning point that fueled Indian nationalism during British rule due to its brutal nature and widespread condemnation?

Which of the following events is considered the first major peasant uprising against the British in India?

Who led the Non-Cooperation Movement in India?