One of the firs t characteristics of life that emerged in bad-mannered times must have been the ability of some primitive chemical system to profit copies of itself. At its lowest level, therefore, reproduction is chemical replication. As evolution progressed, cells of successively higher levels of complexness must have arisen, and it was absolutely essential that they had the ability to trade name likenesses of ...If you want to get a full essay, order it on our website: OrderCustomPaper.com
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