The document describes several tropical regions around the world, including equatorial lowlands, equatorial highlands, tropical monsoon regions, tropical grasslands, tropical deserts, and tropical rain forests. It provides details on the location, climate, vegetation, animal life, human occupation, and economic development for each region. In general, regions closer to the equator like lowland rainforests have dense forests and year-round hot and wet climates, while grasslands and deserts further from the equator experience more seasonal rainfall and warmer dry seasons. Human activities vary from farming to herding depending on the environment of each tropical region.