Men produce sperm constantly. There are millions of sperms cells in the male testicles, and the amount produced increases once a male reaches puberty.
Their entire life as long as other factors do not stop it. However, old age usually includes sperm becoming less effective.
males produce sperm and females produce eggs
Testes ,ovaries
Males produce many things. They produce sperm as well as testosterone. They differ from women because women produce estrogen. Everyone produces immune system functions in their intestines.
Yes, but they have a lower sperm count.
Males produce sperm from the age of puberty throughout adult life.
sperm
males produce sperm and females produce eggs
Because you females need us to.
Yes, they do, once they hit puberty.
Yes, but this is exclusive only to males: only the boar bears produce sperm.
inability to produce healthy sperm and the production of too few sperm
They're born without sperm, they make sperm during puberty and then continue to produce sperm.