The brains sends nerve waves to other parts of the body to make our skin say that something hurts.
Answer: All plasma membrane surfaces are hydrophilic. In comparison, because of the fatty acid tails, the interior of the membrane between its two surfaces is a hydrophobic or nonpolar region. The main fabric of the membrane is composed of two layers of phospholipid molecules. The hydrophilic or "water-loving" areas of these molecules are in contact with the aqueous fluid both inside and outside the cell. Hydrophobic, or water-hating molecules, tend to be non-polar.
Explanation:
D) selecting random sample allows for a more representative sample in a survey.
A hero is someone who inspires you. Someone you can look up to. Someone who always tries to do the right thing all the time. Like a police officer or a fireman. Heck, even a teacher. Personally my hero is Dead Pool because he's funny. But if I'm being serious my real hero is the ones who risk their lives to recue the little kittens and puppies everyday and give them a loving furever home. :D