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.
Depending on different situations, sperms can survive from hours to 7 days inside a female's body. When a man ejaculates inside a woman, very few sperms survive long enough to make an attempt at fertilization.In order to do this, they have to get as far as they can in the cervix.evertheless, sperm can only survive for about 20 minutes to an hour depending on its level of exposure to the air and environmental factors. After ejaculation, semen dries up, rendering the sperm useless.