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biological process
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oso foreign
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Where does oxygen poor blood first enter the heart?
somewhere
When where the first oxygen tanks invented?
The first thing similar to an oxygen tank that was invented was invented in 1868
Where and when was oxygen discovered?
Oxygen was discovered by the very first species on planet Earth.
Which gas forms the liquid first when the air is cooled?
oxygen and then hydrogen
How do you know that the first living thing did not require oxygen?
Because at the time of the first living thing we know that there was no free oxygen in the environment.
Where does oxygen poor blood first enter the heart?
somewhere
What is the geolgic significance of banded iron fomation?
It was laid down when earths oceans first acquired oxygen in the Precambrian
True or false there was a great deal of free oxygen in earths atmosphere before the first life forms developed?
false
Earths first atmosphere contained little to no?
Oxygen. Earth's early(first) atmosphere is believed to contain hydrogen cyanide, carbon dioxide, carbon monoxide, nitrogen, hydrogen sulfide, and water. but still it only had little to no oxygen.
What was Earths first atmosphere was created by?
The earths first atmosphere was created by the methane, carbon dioxide, sulphur oxides and water vapor that volcanoes were pumping out. Oxygen started to come in noticeable quantities once life had formed. Nitrogen is inert, so doesn't do anything.
Where does oxygen poor blood enter first?
Superior Vena Cava: All blood on the right side of the heart is CO2: Carbon Dioxide. It's O2 (Oxygen) starved.
What is the name of the first space shuttle that traveled to earths orbit?
Columbia was the first shuttle to enter orbit. This was the same shuttle that was destroyed during re-entry in January 2003, with the loss of seven astronauts.
The first layer of the earths atmosphere touching earths surface?
mesosphere
The first layer of the earths atmosphere touching earths surf?
troposphere
How did oxygen first enter earth atmosphere?
biological processes
Why is earths oxygen breathabale?
First of all it is spelled 'Oxygen'. It is not that Earth's Oxygen is more breathable than another planet's. We have just evolved to need Oxygen to live. Other planets don't have as much Oxygen as we need to live. They have other gases that would kill us instantly. That is why we need spacesuits to be able to walk on the moon and other planets. The same goes for Outer Space. Outer Space has no Oxygen at all.
What is the difernce between earths atoespher and all of the other planets?
first it is atmosphere it is earth has enough oxygen for us to live on it is not a thick as gas planets cuz its not a gas planet its a rocky 1
