Motor units that control skeletal muscles involved with fine motor movements (eye muscles or 35) the hands) have muscle fibers than motor units that control more gross movements (gastrocnemius muscle of the lower leg).

Options are not provided. The complete question is:

Motor units that control skeletal muscles involved with fine motor movements (eye muscles or 35) the hands) have muscle fibers than motor units that control more gross movements (gastrocnemius muscle of the lower leg).

A) fewer

B) more

C) the same number of

A) fewer

Explanation:

The number of muscle fibres in each unit may differ within a single muscle and even more from muscle to muscle. Muscles operating on the largest body masses contain more muscle fibres in their motor unit, while smaller muscles have less muscle fibres in each motor unit. For example, Thigh muscles may have a thousand fibres in each unit, whereas extraocular muscles can have ten fibres in each unit.

Muscles that have more motor units are able to operate more force output.

Hence, the correct option is A.

a. by using fur or clothes to trap heat energy near the body

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.