Question

what leads to pregnancy?

Answer 1

Pregnancy is the carrying of one or more embryos or fetuses by female mammals, including humans, inside their bodies.To start a pregnancy, one sperm needs to get deep inside a woman's body to find one warm, moist egg. Then, it fuses with the egg to form zygote which later on attaches itself to the wall of the woman's uterus, where it can grow and develop into a baby over the course of 40 weeks or 9 months.