Of the layers of the skin, which has NO direct blood supply?

Which finding indicates that a patient who received a blow to the head is suffering from something other than a simple concussion?

A) He cannot remember what happened B) He asks the same questions over and over C) His heart rate is 92 beats/min and his blood pressure is 144/86 mmHg D) His pupils are noticeably unequal when assessed

Two fractions that are equal to each other are called ________.

Fill in the blank(s) with the appropriate word(s).