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 difference is that although sex is needed for the species to survive an individual can live without it emotional connection and a sense of belonging are group needs not individual survival needs the truth is there are only five basic needs clean air water nutrients shelter and sleep