carbon dioxide
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 general pH level for most humans are between 7.35-7.45
when higher energy ultraviolet radiation act on the oxygen at the higher level of the atmosphere, they destroying many molecules of atmosphere.
The oxygen concentration in the atmosphere today (which is at about 21%) has been at its current level for the past 400 million years.
carbon dioxide
carbon dioxide
carbon dioxide
the animal
yes
true
Levels of carbon dioxide (CO2) in the atmosphere have increased rapidly since the beginning of the Industrial Revolution. Scientists agree that this is largely caused by burning fossil fuels (coal, oil and natural gas) in industry, transport and the generation of electricity.
22% oxygen at sea level
If humans continue doing nothing to reduce their impact on the carbon cycle then the levels of carbon dioxide in the atmosphere will continue to rise.
Extended digits, small joints, a large axis or rotation and an opposable thumb give the human hand increased capability at manipulating objects.
since human is been on this planet our atmosphere had gotten into several changes like increase in temperature,unstable weather,etc.humans have also increased the level of carbondi-oxide in our atmosphereetc.
This is the troposphere, the lowest level of Earth's atmosphere