Answer: the " <span>large, near-shore island " .
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Almost all areas of Biology have developed in the twentieth century, but few areas have gained a lot of importance. Some of these are :
1. Genomics and Genetics
2. Biotechnology
3.Cell and molecular biology
Weeks 3-4: three layers form: the
ectoderm, the mesoderm, and the endoderm. Neural tube develops and produces
neurons. Heart begins beating. Ribs, muscles, and digestive tract form. weeks
5-8: arms and legs develop, then fingers and toes; placenta and umbilical cord
function; digestive system develops; liver produces blood cells.