Answer:because of small amount of oxygen
Explanation:
If you get higher by the atmosphere the air will start to decrease
<u>Answer:</u>
<u>Answer:Chromium</u>
Explanation:
Chromium is the first element in the sixth column of the periodic table. It is classified as a transition metal. Chromium atoms have 24 electrons and 24 protons with the most abundant isotope having 28 neutrons.