AP PSYCHOLOGY

Detailed explanation-1: -Early pregnancy symptoms (at 4 weeks) a missed period (often one of the first signs of pregnancy) a metallic taste in your mouth. sore breasts. nausea-also known as morning sickness, although you can experience it at any time (read about morning sickness in week 6)

Detailed explanation-2: -By the end of the embryonic stage, most organs have started to form, although they will continue to develop and grow in the next stage (that of the fetus). As the embryo undergoes all of these changes, its cells continuously undergo mitosis, allowing the embryo to grow in size, as well as complexity.

Detailed explanation-3: -The heart is the first organ to form during development of the body. When an embryo is made up of only a very few cells, each cell can get the nutrients it needs directly from its surroundings.