thus the graduate study is advanced course work which follows undergraduate course work an undergraduate degree is awarded for the completion of 2 years associates or 4 years bachelors of college level studya graduate degree is awarded after attending graduate school graduate degree is one that requires you already have an undergraduate degree in other words that you are a g raduate of a college in order to even enter the program such as a masters or doctorate
Would you like to merge this question into it? exists and is an alternate of . Chemical evolution is thought to have caused the first cells to spontaneously generate over a very long period of time. Chemical evolution is thought to have caused the first cells to spontaneously generate over a very long period of time.
In some cases, the mechanism that generates cells that are needed also fortuitously generates unneeded ones as well (as happens in the immune system). And some cells that die are needed, but only transiently. Cells die either because they are harmful or because it takes less energy to kill them than to maintain them.