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What are the two deadly gases Four billion years ago the earth's atmosphere?
the two deadly gases 4 billion years ago are the fart and breath stinks......
How many million of years ago did Earth's atmosphere attain the oxygen levels it has today?
1000 millions years ago.
How might burning fossil fuels affect the composition of gases in the atmosphere?
Burning of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity releases carbon dioxide (and other gases). These change the composition of gases in the atmosphere. The present levels of carbon dioxide have increased from 280 ppm (parts per million) one hundred years ago to the present 400 ppm.
When did Pangaea form?
Pangaea formed about 300 million years ago and began to rift about 200 million years ago.The formation and falling apart of super continents appears to be cyclical. Pangaea is the fourth super continent in Earth's history.Known super continents:Columbia (2 billion years to 1.8 billion years ago)Rodinia (1.1 billion years ago to 750 million years ago)Pannotia (600 million years ago to 540 million years ago)Pangea (300 million years ago to 200 million years ago)
How long did it take for Pangaea to split?
Pangaea (or Pangea) was on Earth from about 300 million years ago to 180 million years ago.
What are the two deadly gases Four billion years ago the earth's atmosphere?
the two deadly gases 4 billion years ago are the fart and breath stinks......
How many million of years ago did Earth's atmosphere attain the oxygen levels it has today?
1000 millions years ago.
What is the conditions in earth atmosphere?
the atmosphere of earh 3.6 billion years ago were: nitrogen,water vapor,carbon dioxide, and methane were probably the most abundant gases
What 3 gases made up the earths atmosphere a lot of years ago?
carbon dioxide, sulphur dioxide and still nitrogen
How might burning fossil fuels affect the composition of gases in the atmosphere?
Burning of fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity releases carbon dioxide (and other gases). These change the composition of gases in the atmosphere. The present levels of carbon dioxide have increased from 280 ppm (parts per million) one hundred years ago to the present 400 ppm.
When did the dinosaurs existed?
16 million years ago approximately
How many years ago was 1-1.8 million years ago?
1.8 million years ago
When was 4600 million years ago?
4600 million years ago
Era of 570 million years ago?
570 million years ago was in the Neoproterozoic Era. This lasted from 1,000 to 542 million years ago.
How was the sun in the solar system born?
You see million years ago there was a HUGE clump of gases which they call "nebulae" well the gases formed together and then came are star the Sun.
When did the dinosaurs live on earth?
From about 180 million years ago until about 65 million years ago.
When did a coelophysis live?
The Coelophysis was a theropod that lived between 200 and 220 million years ago during the late Triassic period. Paleontologists believe these dinosaurs became extinct due to severe weather changes and a poisoned atmosphere.
