Scientists estimate that for more than _______ years after cells originated, all organisms consisted of one cell.
A) 2,500
B) 250,000
C) 2 million
D) 2 billion
E) 2 trillion

Question

Quizplus · Accepted Answer

Based on current scientific estimates, it is believed that unicellular organisms existed for over 2 billion years after the origin of cells. Option A (2,500) and B (250,000) are far too short, option C (2 million) is only a fraction of the estimated timeline, and option E (2 trillion) is a vastly exaggerated number.

Scientists Estimate That for More Than _______ Years After Cells