Answer:
"Low levels of the hormone epinephrine, also called<em><u> adrenaline</u></em>, cause blood vessels to relax and widen. High levels of this same hormone, along with the hormone norepinephrine, cause the blood vessels to narrow and the heart rate to rise, <u><em>increasing blood pressure</em></u>."
Explanation:
Answer:
work lost due to friction
Explanation:
The work output of any real machine is usually less than the work needed to operate the machine due to the fact that <u>some input work is lost due to friction.</u>
<em>Frictional forces are those forces that oppose the motion of 2 surfaces sliding against each other and this is one of the reasons machines do not work at 100% efficiency. When the opposition happens, some of the input work is converted to heat.</em>
28 degrees below freezing would be 4 degrees