Примери коришћења Four billion years ago на Енглеском и њихови преводи на Српски
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Four billion years ago, Earth begins.
And this is about a little over four billion years ago.
Around four billion years ago, Mars had an oxygen-rich atmosphere.
Life may have existed on the Moon four billion years ago.
Four billion years ago, the solar system was completely different than now.
Now this quest started four billion years ago on planet Earth.
These layers tell the story of how the comet was made, some four billion years ago.
Interestingly, the conditions on Earth three to four billion years ago are thought to be much different from what they are today.
Artist impression of how Mars may have looked four billion years ago.
Four billion years ago, each planet had the right conditions for life, and may have even harbored simple microorganisms.
This theory suggests that Mars was struck by a Pluto-sized body about four billion years ago.
Life emerged in Earth's seas as single-celled bacterial organisms perhaps four billion years ago, but the earliest life forms lacked the ability to move independently.
Life seems to have originated in the primordial oceans that covered the Earth four billion years ago.
Life grew in the days of the Earth as single-celled organisms about four billion years ago, but the earliest forms of life lacked the ability to move independently.
In the past, scientists believe that Mars had a similar magnetic field and thicker atmosphere, butthat the field was lost around four billion years ago.
We know that volcanic eruptions were frequent around four billion years ago, and would have belched carbon dioxide, nitrogen, hydrogen sulphide and sulphur dioxide into the atmosphere.
The Earth's atmosphere evidently had a much higher greenhouse gas content four billion years ago, which kept it warm.
If a larger amount of silicon had been incorporated in Earth's core more than four billion years ago, as suggested by Prof Ohtani's results, that would have left the rest of the planet relatively oxygen rich.
The primary mission of the Viking probes of the mid-1970s was to carry out experiments designed to detect microorganisms in Martian soil because the favorable conditions for the evolution of multicellular organisms ceased some four billion years ago on Mars.
Research in 2008 has presented evidence regarding a theory proposed in 1980 postulating that, four billion years ago, the northern hemisphere of Mars was struck by an object one-tenth to two-thirds the size of the Moon.
And the three major phases of the early universe was energy, when the dominant force was energy; then the dominant force, as it cooled, became matter; and then,with the invention of life four billion years ago, the dominant force in our neighborhood became information.
My biological Awakening is the culmination of a process initiated some four billion years ago, as you measure time.
One theory, published in 1999 and re-examined in October 2005(with the help of the Mars Global Surveyor),is that these bands suggest plate tectonic activity on Mars four billion years ago, before the planetary dynamo ceased to function and the planet's magnetic field faded.
Life seems to have originated in the primordial oceans that covered the Earth four billions years ago.