Students who major in zoology spend a lot of time outdoors studying animals and their habitats. They also study the effects of humans on animals' environment and how to lessen these effects. Some jobs in zoology require an associate or a bachelor's degree, while others demand a degree that takes longer to obtain.
Every living organism needs a home, shelter or environment that provides the safety, ideal emperature and basic things it needs to survive. more science lessons: Asexual Reproduction
The response of our ancestors seems to have been the same. But living outside, with the freedom to roam widely for the purposes of hunting and gathering, suggests the need for at least a temporary shelter. And this, even at the simplest level, means the beginning of something approaching architecture.