Since the beginning of time, humans have interacted with the environment and are dependent on it for food and water.
The type of interaction also varies depending on where you are on the planet.
The ‘tropics,’ which are the regions of the Earth around the equator, between the tropics of cancer in the north and the tropics of Capricorn in the south, are among the several zones of the Earth.
In both hemispheres, the subtropics are roughly between the tropics of cancer and Capricorn and the 40th parallel.