Final answer:
Pregnancy is the process of carrying a fertilized egg in the uterus and involves key concepts such as conception, fetal development, and stages of pregnancy.
Step-by-step explanation:
Pregnancy is the process in which a woman carries a fertilized egg in her uterus, leading to the development of an embryo and ultimately a fetus. The key concepts associated with pregnancy include conception, fertilization, implantation, embryonic development, placenta formation, and fetal development. During pregnancy, various hormonal changes occur in the woman's body to support the growth and development of the fetus. In addition, there are several stages of pregnancy, including the first trimester, second trimester, and third trimester, each with its own unique characteristics and milestones.
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