Beginning of life on Earth
Date: Around 1993
I am twelve years old and want to know how life began on earth.
I am 43 years old and so would I! Scientists believe that
lightning striking the atmosphere of the earth long ago caused certain simple
chemicals like ammonia to form into more complicated chemicals that could lead
to living cells. These chemicals then could hook together in chains to form
molecules that direct life, such as RNA and DNA. One theory also says that
fats in the primitive ocean acted on by waves, formed large globules enclosing
these life directing chemicals, and that these structures eventually formed
primitive cells. Then inside the cells, conditions could evolve to allow the
chemistry of life to work better and better, and so on.
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Update: June 2012