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.
sharedjourney home. Seminal Fluid. When a man ejaculates, the semen he expels is not made up of just sperm. Seminal fluid is also part of the ejaculatory fluid. In order for sperm to be able to fertilize an egg, it is necessary for seminal fluid to be of the correct consistency as well as for sperm to have maximum motility and ideal morphology.