The document summarizes the climate and geography of the hot and wet equatorial region, which extends from 100 north to 100 south of the equator. This region experiences high heat and rainfall throughout the year and is home to equatorial rainforests like the Amazon and Congo basins. These forests contain four layers - the forest floor, understory, canopy, and emergent layers - and support a rich diversity of plant and animal life. Indigenous tribes traditionally engaged in shifting agriculture, hunting, fishing and mining for subsistence, while plantation agriculture of crops like rubber, tea and cocoa was later introduced. However, the region now faces challenges of balancing economic development with environmental protection and preserving tribal ways of life.