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the amount of animals breathing in the oxygen, and not enough plants.
Wiki User
∙ 11y ago
Wiki User
∙ 12y agothe increase in atmospheric oxygen concentrations 300 mya resulted in the first photosynthetic life on earth.
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What is renal ischmia?
Renal ischemia /hypoxia: blood deficiency in the kidney caused by a constriction or obstruction of its blood vessels, or oxygen concentration below physiological levels.
Where in the body would you find low oxygen levels causing vasoconstriction and high levels causing vasodilation?
Low oxygen levels cause vasodilation in systemic arterioles.High oxygen levels cause vasodilation in capillaries in the lungs.
How does oxygen levels change throughout the circulatory system?
Your oxygen level does not decline uniformly across the circulatory system. It drops suddenly at the proximal end of the capillary or on the way to distal end. Till then and after that it is well maintained.
Is an iron nail rust a physical change?
I am quite sure that rust is a chemical change. Rust is caused when oxygen atoms begin bonding with the iron in the nail, which makes it a compound instead of a pure element.
What color is skin with low levels of oxygen?
purple
Atmosphere in the permian?
the atmosphere in the Permian had 115 % of modern oxygen level and 3x the amount of carbon dioxide- pre-industrial level.
How do mountain climbers adjust high altitudes and low oxygen levels?
because the higher you go up, the harder it is for your body to absorb oxygen. Basically altitude sickness is caused by oxygen deprivation.
How do the levels of oxygenchange as you ascened Mt. Everest?
The oxygen levels change on Mount Everest during the acent because you are climbing into thinner air where there is less oxygen. Read the article given as a link.
What are the permissible levels of oxygen can a human consume?
What are the permissible levels of Oxygen can a Human consume? What are the permissible levels of Oxygen can a Human consume? What are the permissible levels of Oxygen can a Human consume?
How are oxygen levels affected by respiration?
Oxygen levels will be decreased.
What happens if levels of carbon dioxide or oxygen in your body change?
if the oxygen levels are too low, your muscles won't get the oxygen they need from the blood cells. if the carbon dioxide levels are too high, well, carbon dioxide is a waste product, the same thing will happen. this is why when you hold your breathe you pass out. if the muscles don't get the oxygen they need they can't move.
What change caused oxygen to build up in earth atmosphere?
the "invention" (or development) of chlorophil by plants
What is oxygen depletion?
When oxygen levels in water get low... When algae takes over a lake. The oxygen levels will get low.
About 2 billion years ago the levels of iron in the oceans declined rapidly because?
Oxygen produced by photosynthesis caused it to precipitate from solution.
How might you account for dissolved oxygen concentrations of such a low value at a temperature of 25C?
Other factors must have caused the low dissolved oxygen levels. Bacteria and other organisms can lower the dissolved oxygen of water when they respire aerobically.
Is a tarnished silverwared is a result of chemical change?
Yes. Tarnished silver is caused by the reaction of the silver with oxygen.
Why do catfish survive in low-oxygen levels better than trouts?
it is because catfish can survive in low-oxygen levels. Trout survives at higher oxygen levels
