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.
Eggs live (and can be fertilised) for 12â24 hours after being released, and sperm can stay alive and active in your body for 12â48 hours after ejaculation, so you donât have to have intercourse at the exact moment of ovulation to get pregnant.orâ. 1  If the tests reveal a possible fertility issue, especially if you are in your thirties or older, they may make an appointment for you to see a specialist for further tests and possible treatment at your local hospital or fertility unit. 2  For information on what happens at a fertility clinic, see: