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.
It is not likely that tiny sperm could travel through the vast area of water that would fill a pool, bath tub, or hot tub to reach the vagina and result in pregnancy. If ejaculation occurred in plain warm water, sperm could survive for a few minutes. If ejaculation occurs in very hot water, or water filled with pool chemicals, bubbles or other substances, sperm would not be able to survive for more than a few seconds.