They should ask the population of the people to know how much supply’s they need and what does everyone need hope this helps :)
Answer;
Nitro.
Explanation:
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%.
I can answer when you say if you are talking about cells or no
They are both are types of explanations.
Answer:
Buffer
(a brainliest would be appreciated)