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the oxygen level decreases
Because due to the over pollution and cutting down the tree's level of Oxygen is decreasing .The level of Nitrogen always remains constant in the atmosphere . The level of Nitrogen doesn't' depend on the level of the Oxygen level.
The oxygen level remains about the same, but the density of the air is reduced.
Hypoxia
There is no third energy level of oxygen, there is only two. The second energy level has 6 electrons.
21%
Can you elaborate a little more? Dr. B.
The oxygen content of air at any altitude is always about 21%
Due to animal respiration and various plant activities Oxygen is both consumed and released in the atmosphere.But at an average the level of Oxygen remains 21% by volume.Hope your question is resolved.Cheers,Aaditya A. Damani
The average level which teachers hope for is a level 4/level 5, any level higher than this (level 6) is fantastic and means your child is doing well in English.
About 98% is normal, no matter what a person's age is.
the oxygen level decreases
Oxygen's highest level is 100%. Oxygen's lowest level would be 20%.
the oxygen is 10%
Because due to the over pollution and cutting down the tree's level of Oxygen is decreasing .The level of Nitrogen always remains constant in the atmosphere . The level of Nitrogen doesn't' depend on the level of the Oxygen level.
Yes, level 5 is good for a year 6. Here is a simple table to show you the expectations of a child: Level W Working towards level 1, very weak Level 1 Average for a typical 5 year old Level 2 Average for a typical 7 year old Level 3 Average for a typical 9 year old Level 4 Average for a typical 11 year old Level 5 Average for a typical 13 year old Level 6 Average for a typical 14 year old Level 7 Above average for typical 14 yr old Level 8 Only available in maths Hope this helps :) http://www.satsguide.co.uk/what_are_sats.htm
If you are talking about a Human Being, it is the level of Oxygen in that persons Blood. That person had a Oxygen Saturation Level in their Red Blood Cells of 92% Depending on Age and overall Health the Optimal Range is from 94% to 98%. Please note that this is a average guide only, if you want further detailed info, or if you are worried, please contact your doctor.