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What planet has a nitrogen- oxygen atmosphere?
Earths atmosphere is rich in Oxygen, some 21% of the air is Oxygen. There is oxygen on other planets, but the percentage comes nowhere close to this. The percentage of Oxygen in earths atmosphere is thought to have been much higher in the past, before animals were about, but after the arrival of plants.
What conditions characterize atmosphere III?
nitrogen-rich and oxygen-poor
What process do scientists think provided earth with an oxygen-rich atmosphere?
Scientists believe that stromatolites were responsible for providing an oxygen-rich atmosphere in precambrian times. Stromatolites are structures formed of sediment. The cyanobacteria that formed these structures were photoautotrophs that used sunlight, carbon dioxide and water to produce their food and a byproduct of oxygen.
What do Proterozoic-aged red beds and banded iron formations tell us about the Earth's early atmosphere?
Banded iron formations indicate that there were oxygen-rich and oxygen-poor episodes during Earth's early atmosphere. Banded iron formations first appear in the Archean, 3 billion years ago. Unbanded iron deposits (red beds) from the Proterozoic, 1.8 billion years ago, indicate that the atmosphere became oxygen rich and that oxygen-poor episodes were no longer prevalent.
What are the two main reasons that an oxygen-rich atmosphere is important for life on Earth?
Oxygen in the atmosphere is important for life for two main reasons. First, oxygen makes up the ozone layer. The ozone layer is in the upper part of the atmosphere, and is made of O3 molecules-a particular type of oxygen molecule. It blocks harmful radiation from the sun and keeps it from reaching Earth's surface. Without an ozone layer, intense radiation from the sun reached the early Earth's surface, making life almost impossible. Secondly, oxygen in the atmosphere is necessary for animals, including humans, to breathe. No animals would have been able to breathe in Earth's early atmosphere.
What planet has a nitrogen- oxygen atmosphere?
Earths atmosphere is rich in Oxygen, some 21% of the air is Oxygen. There is oxygen on other planets, but the percentage comes nowhere close to this. The percentage of Oxygen in earths atmosphere is thought to have been much higher in the past, before animals were about, but after the arrival of plants.
How many miles to leave the atmosphere?
To reach the complete Exophere of the earth, it is usually said you will need to travel 10,00km vertically. Though its approximately 100km to leave earths oxygen rich atmosphere.
What if oxygen-rich blood mixes with your oxygen-poor blood?
the quality of our blood that rich with oxygen will become low
What conditions characterize atmosphere III?
nitrogen-rich and oxygen-poor
Why does oxygen occur naturally?
It is a byproduct of the life processes on Earth. Earth's early atmosphere contained no Oxygen, but Earth was slowly Terra-formed by life and obtained an Oxygen rich atmosphere.
What changed your formerly poisonous atmosphere into an oxygen rich atmosphere?
well, the first ice age is when blocks of ice and rocks release oxygen which helps us breathe
What was the affect that photosynthesizing had on the ancient atmosphere?
Early bacterial respiration in the ancient atmosphere (see the process of Photosynthesis photo1, and Photo 2 with oxygen waste product) released oxygen into the atmosphere leading to a oxygen rich atmosphere and the ability of other organisms that fix oxygen to evolve. i.e us! and animals.
What do veins carry oxygen poor blood into?
The lungs, where they become oxygen-rich blood
What bacteria are thought to be responsible for establishing Earth's oxygen-rich atmosphere?
Cyanobacteria are believed to be responsible for establishing Earth's oxygen-rich atmosphere. Nearly 2.3 billion years ago, these microbes, which lived in the seas, were the first organisms to produce oxygen, leading to the transformation of the Earth's environment.
What planet has oxygon rich atmosphere?
Earth. It's the only planet with significant amounts of oxygen in the atmosphere, making up about 21%.
Plants release carbon dioxide during the whole night then how it is possible that morning atmosphere is fresh and rich with oxygen?
They give of oxygen
What happens to a copper rod if it is on fire?
Presumably burning in an oxygen-rich atmosphere, it is chemically reacting with oxygen to form copper oxide.
