Final answer:
The evolution of less body hair coverage in humans can be attributed to thermoregulation and the need to control parasites on the body.
Step-by-step explanation:
The evolution of less body hair coverage in humans can be attributed to several factors. One hypothesis is that it was an adaptation for thermoregulation, as humans needed to cool themselves in the heat of the savanna. This is supported by the development of sweat glands, which are more numerous in humans than in other primates. Another theory suggests that the loss of hair was an adaptation to control parasites on the body. Humans lost body hair about a million years ago, but didn't start wearing clothes until much later.