Biology 1
Formative Assessment #10
SC.912.L. 15.8
10. Early Earth was an extremely hot violent place of volcanic eruptions, collisions with
objects from space and deadly gasses. This was not a place for living organisms. Not until
the Earth began to cool did the possibility of life emerge. Which of the following was the
most likely trigger for life on Earth?
A. direct sunlight
B. appearance of water
C. decrease in methane gas
D. increased carbon dioxide
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