Scientists believe that the first prokaryotes on Earth arose over ________ years ago, and the first eukaryotes arose about ________ years later.
A) 3.5 million; 1.7 million
B) 1.7 million; 3.5 million
C) 3.5 billion; 1.7 billion
D) 1.7 billion; 3.5 billion

Question

Quizplus · Accepted Answer

The first prokaryotes are believed to have arisen over 3.5 billion years ago, while the first eukaryotes arose about 1.7 billion years later. Option A and B have the numbers swapped, while option D reverses the order of the events.

Scientists Believe That the First Prokaryotes on Earth Arose Over