Question

How old is earth (in a million years)?
A. 3600
B. 4600
C. 7200
D. 6000

Answer 1

Hint: Earth is anticipated to especially be 4.54 billion years old, plus or minus approximately 50 million years, or so they ordinarily thought. Scientists certainly have scoured the Earth searching for the oldest rocks to radiometrically date, so earth essentially is envisioned to be 4.54 billion years vintage, plus or minus approximately 50 million years, or so they in reality idea.

Complete answer:
The solar system simply turned into one born around 4600 million years ago by using the collapsing of gaseous clouds referred to as solar nebula under influence of its pretty own pressure of gravity, or so that they especially notion. It produced the form of several bloodless, spinning, and cloudy hundreds of cosmic dirt and gases which ordinarily are essentially termed as nebulae, which is pretty huge.
The critical mass of the nebula formed the sun which got warmer through the conversion of its gravitational strength into warmth, which is sort of within reason. The rotational movement of the nebula separated a ring of cloud which sort of condensed into planets in a commonly major manner. therefore, Earth was originated around 4600 million years in the past by condensation of the cloud of dust and rocks surrounding the solar, sort of besides showing how the solar machine became born around 4600 million years ago by the collapsing of gaseous cloud referred to as sun nebula beneath the effect of its very own pressure of gravity, or so that they simply thought.
The organisms that use light as a source of electricity and carbon dioxide as a leader carbon source are called photoautotrophic organisms. The primary photoautotrophs specifically had been Cyanobacteria-like organisms which commonly originated around 3600 million years in the past as kind of proved by virtually fossil information, so the rotational movement of the nebula separated a hoop of cloud which condensed into planets subtly.
So, the correct answer is “Option A”.

Note:
As the age of earth generally is million years, this could specifically represent the age of the Earth’s accretion, or center formation, or of the in reality material from which the Earth is in a diffused way.