According to scientific evidence,early life could NOT form or persist in the presence of
A) methane gas.
B) hydrogen gas.
C) oxygen gas.
D) water vapor.
E) carbon dioxide.

Question

Quizplus · Accepted Answer

Early life could not form or persist in the presence of oxygen gas because oxygen is highly reactive and can damage organic molecules that are important for the formation and maintenance of primitive life. This is known as the "oxygen paradox," as free oxygen did not exist in significant quantities on Earth until the emergence of photosynthetic organisms about 2.4 billion years ago. Therefore, oxygen was likely an obstacle to the origin and early evolution of life.

According to Scientific Evidence,early Life Could NOT Form or Persist