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.
What is the most abundant element in the earth? Earth has oxygen and silicon which make 75% while in the human body oxygen, hydrogen, and carbon make up over 90% of it.In short its oxygen.he fourth most abundant element in the universe by mass is carbon. The most abundant is hydrogen, then helium, followed by oxygen.