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 can live for 72 hours or more after being ejaculated. Acid conditions in the vagina kill half of the sperms.Note: Remaining half is more than 60 million sperms. Dead sperms travel as fast as the live ones. Sperms swim moving at the speed of 1 inch in 8 minutes. Mere few hundred will actually reach the egg. â¦ he body will never run out of it-the production process is always on the go. For a sperm cell to mature it will take about 60-70 days. Although there might still be sperm in the testes after ejaculation, it might take some time to release them as well (after initial release).