I believe it is K or rather potassium
Explanation:
As shown in the illustration the highest percentage of air is composed of nitrogen gas at 78%. The second highest percentage is oxygen at 21%. The other trace gases, including carbon dioxide, make up about 1% of the gas composition.
Learn More:
For more on air composition check out;
brainly.com/question/10343608
brainly.com/question/14322147
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so you’d need to find the amount of gallons your family uses in 11 minutes and subtract 73000 from that number
i used the same formula, came up with 80300 gallons a year, and subtracted 73000 from it to get
7300 gallons are saved by reducing showering time by one minute
N= -m - a i think I did that right not sure lol