Why would you blood boil in the mesosphere?

Because the mesosphere is extremely thin and the temperatures in the mesosphere decrease rapidly with altitude.The blood would boil because of the low pressure. That's why when meteors hit earth they are burned in the mesosphere because the air is so thin there is enough gas molecules to cause it to burn.

That's why when Astronauts are about to go up in space they wear protective clothing/suits 

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The statement is correct because if there is a bunch of noise around you and you are focusing on the noise you will not comprehend your questions and lessons nor will you be able to get the proportion information you need and you will likely spend many more hours on work than normal than if you could ignore the sound

The answer is false