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I've just started at http://www.pesolamedia.com/definition-essay-on-beauty/ buy writing paper Here's the crux of his theory: Many scientists believe that RNA was the first genetic building block of life to form on Earth, preceding DNA. But the conditions on Earth three billion years ago weren't amenable to RNA's birth. First, the Earth was likely covered with water — or a soup of simple organic molecules — and liquid thwarts the formation of RNA. Just as important, two elements Benner sees as crucial to RNA's creation — boron and oxidized molybdenum — were scarce or nonexistent on Earth at the time.
