Quarantines. All other options are medical ways.
<span>a water pollution policy</span>
On long flights, airplanes generally travel somewhere near the border of the <span>stratosphere and mesosphere.
</span><span>The stratosphere is very dry, with little watervapor and few clouds.
</span><span>One benefit of the stratosphere is that it shows very little temperature differences and the air density is very low, which means that jets and/or planes burn a lot less fuel resulting in further travel ranges. </span>
It is a protein that makes hair and nails
Answer:
B. A human buying a carton of eggs
Explanation: