Question

Modern humans (Homo sapiens sapiens) appeared about 0.04 million years ago. What percentage of the geologic time scale includes the "human occupation of the Earth"? (Be sure to give your answer was a percent to the nearest four decimal points (x.xxxx%).)

Answer 1

Answer:

About 0.0009% (up to four decimal point)

Explanation:

The Geological time scale usually refers to the sequential arrangement of major and minor events, including the global mass extinction event, that has taken place in the past right after the formation of the earth.

The age of the earth is approximately= 4.6 billion years= 4.6×10⁹ years

Modern humans first appeared about= 0.04 million years back = 0.04×10⁶ years

The percentage of the total geological time scale that covers the human occurring period on earth so far is

$\dfrac{0.04\times 10^6}{4.6\times 10^9}\times 100\\\\=0.00086\\\\\approx 0.0009\%$

Thus, it signifies that the human occurring period on earth covers only a small portion of the total geological time scale i.e. 0.0009%.

Answer 2

Answer:

Holocene epoch

Explanation:

• It corresponds with the rapid growth and development of the human species over the planet and current period of warm period and it's stated around 11,650 cal years ago before the present.

• The specification of the species is known to have been taken place about 350,000 years ago, in the spit for the Netherlands in about 500,000 to 800,000 years ago. And earliest descendants were the H. Erectus some 1.8 million years ago.

• Formulation of the neolithic culture of agriculture that was one of the primary forms of the early occupation on the planet started on the 0.0117 million years ago.

• Thus about 87% of the planet has nee occupied b the human since there geologic period.