Some of the symptoms of Centrilobular emphysema incude: 1  Persistent cough. 2  Shortness of breath (dyspnea) 3  Wheezing. Chest pains.  Fever.
By far, the most abundant gas in the Earth's atmosphere is nitrogen, which accounts for about 78% of the mass of dry air. Oxygen is the next most abundant gas, present at levels of 20 to 21%. Although humid air seems like it contains a lot of water, the maximum amount of water vapor that air can hold is only about 4%. Abundance of Gases in the Atmosphere. This table lists the eleven most abundant gases in the lower portion of Earth's atmosphere (up to 25 km). While the percentage of nitrogen and oxygen are fairly stable, the amount of greenhouse gases changes and depends on location. Water vapor is extremely variable.
Can We Breathe Other Gasses Mixed With Oxygen? As you may or may not know, oxygen is only second most abundant gas in what we call âairâ. Nitrogen takes the top spot, accounting for a whopping 78% of the gas in Earthâs atmosphere. In third place sits Argon at a measly .9%. One reader wanted to know what would happen if we kept the oxygen the same, but replaced the nitrogen with something else.