Which of the following statements regarding the motor unit is true?

a) each motor unit can consist of a different number of muscle fibers
b) all muscle fibers of one particular motor unit are always the same fiber type.
c) a muscle can be composed of a different number of motor units.
d) all of the above.

wheres the answers ?

the answer is c.) there is a warm front in region a and a stationary front in region b.

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.