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.
Yes | No Thank you! The going rate for most regualar sperm is up to 72 hours. Many die off in the very acidic vaginal canal within the first 12 hours. However, once in the right cervical fluid conditions, they can survive much longer. They can be found with weak motility in the tubes for up to 7 days. However, the most important thing to remember is the capacitation, which is the sperm's ability to fertilize an egg. This goes down dramatically after 72 hours.