Etiqueta: biology

Why does our hair turn white with age?

The mechanism that produces white hair is not well known. It is very likely, although not definitely proven, due to the oxidation of melanin caused by the aging of the hair follicle cells.

Why do we cry?

Darwin is credited with the opinion that crying only lubricates the eye, but today it is accepted that it has an intrapersonal and an interpersonal function.

Why do only female mosquitoes bite?
Why do only female mosquitoes bite?

CARLES MARTÍN CANTARINO answers: The answer may be simple, and pretty sure many people already know it: only female mosquitoes bite because they need blood, not for food, but to produce eggs. In fact, a mosquito, male or female, can live quite well without biting, just