Examples of 'four billion years' in a sentence
Meaning of "four billion years"
four billion years: This phrase signifies a period of time equivalent to four billion years. It is often used in scientific or astronomical contexts to describe the geological age of the Earth or the universe
How to use "four billion years" in a sentence
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four billion years
It began around four billion years ago.
Four billion years ago it was a different story.
The universe is four billion years old.
Four billion years and we see what happened.
Four point four billion years ago.
Four billion years of evolution.
Life is a thread four billion years long.
Four billion years of evolutionary success has brought us here.
Clues that three or four billion years ago.
About four billion years ago one became two.
From a time almost four billion years ago.
Four billion years.
When it formed over four billion years ago.
In four billion years of hunting predators have become better at killing.
Life began in water four billion years ago.
See also
Nearly four billion years of evolution to get to the first tool.
The system is around four billion years old.
Over four billion years old.
Be back in about four billion years.
Nearly four billion years of renovation.
So let us go back four billion years.
But around four billion years ago it was a different story.
Although he might have been off by four billion years or so.
That was four billion years ago.
Has been able to persist for four billion years.
About four billion years ago.
Someone wrote this over four billion years ago.
Four billion years ago followed the earth in its mineral form.
Three and a half or four billion years old.
For almost four billion years our planet has shielded us from the sun.
This was our planet nearly four billion years ago.
Four billion years of death product in our DNA.
Nature is four billion years old.
The climate has been changing for four billion years.
For the four billion years.
It floated around untouched for over four billion years.
It is nearly four billion years old.
Cyanobacteria have been around for close to four billion years.
It took more than four billion years for it to make trees.
The tree of life has been branching for four billion years.
You have got four billion years of dust and water.
They find a genetic algorithm four billion years old.
Four billion years ago Earth was bombarded by a hail of comets and asteroids.
And this is about a little over four billion years ago.
The process started four billion years ago and it still continues today.
It first appeared in the sea almost four billion years ago.
Four billion years ago Earth was probably surrounded by debris ejected in this way.
The earth was born more than four billion years ago.
There is been four billion years of organic, biological life.
Their surfaces date from at least four billion years ago.
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We are talking about a billion dollar weapons project
Billion people are without access to basic sanitation
You and seven billion other people
Examples of using Years
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They spent two years digging a tunnel
Years of expertise in every aspect of machine tools
I waited five years for that space
