Clean the blood area with paper towels to remove most of the spill. Cloth towels should not be used unless they are to be thrown out.
The term yardstick refers to what is a normal response. It really has nothing to do with a yardstick and can be used in many situations. A yardstick is a measurement that has been tested over and over and than that measurement becomes the standard.
Say the yardstick for a reaction time is 5 seconds
Meaning that is what a normal healthy person can do it in.
Joan has the reaction in 4.8 second. Well she is on the the bell curve and did better than the yardstick test measure.
They are most mainly consists of "Keratin"
So, option B is your answer.
Hope this helps!
Answer:
they must eat. food=energy
Explanation: