those countries have very high taxes. Ã°â¢The average annual growth rate for the European population from 1985 to 1995 was only. 0.28 percent; in the same period the population of Asia grew by 1.69 percent per year, and. that of North America by 1.33 percent annually.
The life span of sperm after ejaculation depends on the circumstances. Ejaculated sperm remain viable for several days within a woman's reproductive tract or in nutritive liquid (culture medium) in a lab setting. Fertilization is possible as long as the sperm remain alive â at least five days. Sperm also can be preserved for years when semen is frozen. With. Landon Trost, M.D. 1  Secondary infertility. 2  Paternal age.
Sperm banks and fertility clinics usually tell sperm donors to go 36 hours without ejaculating before making a donation in order to give their sperm count time to build back up. For most men, it takes between 24 and 36 hours to âreplenishâ all the way after ejaculating and get back to their normal sperm count. However, the testicles are producing new sperm all the time. Even five minutes after a manâs last ejaculation, there are a few sperm ready to go. Views Â· View Upvotes.