If we visualize the time that has passed since the origin of our solar system and Earth,or about 4.6 billion years,as a one-hour clock,then out of one hour,humans have been present on the planet for about
A)30 minutes.
B)15 minutes.
C)1 minute.
D)20 seconds.
E)2/10ths of a second.

Question

Quizplus · Accepted Answer

Humans have been present on Earth for a very short fraction of the planet's history. If the Earth's history were compressed into one hour, modern humans (Homo sapiens) have been around for roughly 200,000 years, which is about 2/10ths of a second on this scale.

If We Visualize the Time That Has Passed Since the Origin