April is the <u>fourth month</u> of the year in the Gregorian calendar, the fifth in the early Ju.lian, the first of four months to have a length of 30 days, and the second of five months to have a length of less than 31 days.
A. Releasing a stimulus when hormones increase or decrease I think
It gives a better foundation for the top part of your vertebrae (that are smaller), as it is bigger, it can support the rest of your vertebrae better.