The Greek civilization came after the Minoan. About 2000 B.C., people from the north moved southward into the peninsula of Greece. These people-the Achaeans built walled cities in the southern part of Greece. Their most important city was Mycenae.
In human development, a fetus (/ËfiËtÉs/ ; plural fetuses), also spelled foetus, is a prenatal human between its embryonic state and its birth. The fetal stage of development tends to be taken as beginning at the gestational age of eleven weeks, i.e. nine weeks after fertilization.t the start of the fetal stage, the fetus is typically about 30 millimetres (1.2 in) in length from crown to rump, and weighs about 8 grams. The head makes up nearly half of the fetus' size. Breathing-like movement of the fetus is necessary for stimulation of lung development, rather than for obtaining oxygen.
In weeks four to five of early pregnancy, the embryo grows and develops within the lining of the womb. The outer cells reach out to form links with the motherâs blood supply. The inner cells form into two, and then later, into three layers. Each of these layers will grow to be different parts of the babyâs body.