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biological process
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Where does oxygen poor blood first enter the heart?
Oxygen-poor blood first enters the heart through the right atrium via the superior and inferior vena cava.
Where does oxygen first enter your body?
Oxygen first enters your body through your respiratory system, specifically through your nose or mouth, where it is inhaled into your lungs. In the lungs, oxygen is transferred from the air you breathe into your bloodstream to be circulated throughout your body to provide energy to your cells.
How many electrons are in the first shell of an atom of oxygen?
Oxygen has 8 electrons (assuming its charge is 0), and in the first shell ("closest" to the nucleus) there are 2 electrons. :)
Can a first aider give oxygen?
Yes, a first aider who has been trained to administer oxygen can do so in certain situations, such as during a medical emergency where oxygen therapy is necessary to support a person's breathing or oxygen levels. It is important for the first aider to have received proper training and certification in administering oxygen to ensure safety and effectiveness.
How many electrons are in the first and second shell of oxygen?
In the first shell of oxygen, there are 2 electrons, and in the second shell, there are 6 electrons. Oxygen has 8 electrons in total, with 2 of them in the first shell and the remaining 6 in the second shell.
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
Where does oxygen poor blood first enter the heart?
Oxygen-poor blood first enters the heart through the right atrium via the superior and inferior vena cava.
Where does oxygen first enter your body?
Oxygen first enters your body through your respiratory system, specifically through your nose or mouth, where it is inhaled into your lungs. In the lungs, oxygen is transferred from the air you breathe into your bloodstream to be circulated throughout your body to provide energy to your cells.
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.
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.
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
Why don't meteors first burn up when they first enter earths atmosphere?
It takes a while for air friction to heat them through. Also some are massive enough that they never burn up but hit the earth instead, becoming what we call meteorites.
Earths atmosphere was first changed by?
photosynthesis
What do scientists think was the of the oxygen in earths atmosphere?
It came from primitive organisms early in earth's history. They were the first organisms to use photosynthesis to make food, by using light to convert Carbon dioxide and water into glucose (food) and oxygen. Since oxygen is a waste product of photosynthesis, it was released into the air. As more and more of these organisms multiplied, large amounts of oxygen were released into the air, forming today's atmosphere.
