Active immunity!
I hope this helped! Mark me Brainliest! :) -Raven❤️
Answer: yo sorry this a hard one
Explanation:
bro
Because, at lower elevation, everything is tightly packed, and theres more air. As for at higher elevation (like for example at the top of mount everest) There is less air... The higher the elevation, the less air.
<em>~Hope this helped! :)</em>