What percent of the history of life on Earth have humans existed?

Answer 1

somewhere between 0.13% and 0.2%

Geological timescales are difficult to pinpoint, but our best estimates place the beginning of life between 3.5 and 3.8 billion years ago, and the timescale for human ancestry between 5 and 7 million years ago. When we divide these estimates by each other, we arrive at the following:

#(5,000,000)/(3,800,000,000)=0.0013 or 0.13%#

additionally

#(7,000,000)/(3,500,000,000)=0.002 or 0.2%#

The range of estimates for human existence in relation to Earthly life is thus presented.

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Answer 2

Over 3.5 billion years make up the history of life on Earth, of which humans have only existed for about 0.2% of that time.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.

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