9. What is the heterotrophic
hypothesis on the origin of
life?

Gap-fill exercise

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According to the heterotrophic
the firstliving beings were
simple heterotrophic organisms,
i.e., producers of their own ,
which emerged from the
association of organic molecules
small organized structures (the
). The first organic
molecules their turn would have
from substances of the 's
primitive atmosphere submitted to
electrical discharges, to solar
and to high temperatures.