Life apparently originated on Earth about
A)1 million years ago.
B)6000 years ago.
C)4.5 billion years ago.
D)8 billion years ago.
E)3.5 billion years ago.

Question

Quizplus · Accepted Answer

Scientists estimate that life first appeared on Earth approximately 3.5 billion years ago, after the formation of the planet itself (4.5 billion years ago) and the development of suitable conditions for life to exist, such as the presence of water and a stable atmosphere. This estimate is based on the fossil record and genetic evidence studied by paleontologists, biologists, and other researchers.

Life Apparently Originated on Earth About