Fewer than of blastocysts inserted through ivf successfully implant into the uterus and become newborns.

Fewer than 3 of blastocysts inserted through IVF successfully implant into the uterus and become newborns

It has been shown that  different countries use different numbers of blastocysts for the IVF, regulated by the law. It is important to keep the blastocyst number low, to decrease the number of multiple pregnancy.

the answer is 3.

The blastocyst is a structure formed in the early development of mammals. It possesses an inner cell mass which subsequently forms the embryo. The outer layer of the blastocyst consists of cells collectively called the trophoblast. This layer surrounds the inner cell mass and a fluid-filled cavity known as the blastocoele.

the dark variety, as they are not visible on the dark tree barks

explanation:

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.