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Why has the nitrogen level in the atmosphere kept constant over time?
Wiki User
∙ 8y ago
The absolute amount of nitrogen in the atmosphere has kept constant over time because it is not a gas that reacts readily with other elements - it is relatively inert.
However, the relative level of nitrogen in Earth's atmosphere has changed over time as the atmosphere was "terraformed" by the life evolving on the planet. For instance in the Cretaceous times the atmosphere was much richer in Oxygen (30%) than today (20%) which means that then the %Nitrogen was 70% rather than 80%.
Wiki User
∙ 8y ago
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Carbon dioxide is kept at a constant level by an exchange between the atmosphere and?
The Oceans
Is Nitrogen is a solid at room temperature and pressure?
Liquid nitrogen can be kept at room temperature at sufficient pressure. Otherwise, it is a gas.
What is earth's lower atmosphere is kept warm by?
gases
Are greenhouse gases always considered harmful?
No, greenhouse gases are useful for keeping the earth warm. In fact, they have kept the earth warm enough for life for millions of years.When levels of greenhouse gas increase in the atmosphere, then they are considered harmful, as they trap extra heat that is causing global warming.
How does the atmosphere keep the earths temperature moderate?
The Earth's atmosphere works to keep the planet warm in the same way as a greenhouse. Warmth comes in the form of the sun's rays as it passes through the atmosphere. It is then kept from escaping back into space by greenhouse gases like carbon dioxide, methane and even water vapour.
Carbon dioxide is kept at a constant level by an exchange between the atmosphere and?
The Oceans
How are gases and water levels kept constant?
when the earth is kept at a good level then they stay the same but if the levels a too high there is a good possiblity and they can be constant :)
Is Nitrogen is a solid at room temperature and pressure?
Liquid nitrogen can be kept at room temperature at sufficient pressure. Otherwise, it is a gas.
What means the variable that must be kept constant?
What variables must be kept constant
Why do you observe a decrease is the pH of distilled water when kept at free air?
Carbon dioxide is absorbed; also other oxides of sulfur and nitrogen if the atmosphere is polluted.
How many variables are kept constant in a experiment?
All variables except one, the experimental variable, are kept constant in an experiment.
Sentence of constant?
His constant pace was one thing that kept him ahead of everyone. This is a sample sentence using constant.
Which of the following occur as a result of decreasing the heat energy of a gas?
If pressure is kept constant, the volume will decrease.If volume is kept constant, the pressure will decrease.
Chemical properties for nitrogen?
Nitrogen is kept in places to keep away air as it is very less reactive.
What is a experimental constant?
There are potential variables that are kept constant for each trial in a set of trials.
The atmosphere on earth is kept in place by?
Gravity.
The molecules of gas are kept in the lower layers of the atmosphere by the force of?
The molecules of gas are kept in lower atmosphere due to a special force. It is called gravity.
