I believe Cortex is the last structure of the brain to complete its growth process. Surrounding the brain is the Cerebral cortex which resembles a half shelled walnut, it is the largest, most complex brain structure which accounts for 85% of the brain's weight, containing the greatest number of neurons and synapses, and responsible for the unique intelligence. It is the last brain structure to stop growing, it is sensitive to environmental influences for a much longer period than any other part of the brain.
The contractile units of skeletal muscles are myofibrils. Thus,option A is correct.
<h3>What is skeletal muscles?</h3>
Skeletal muscles are 32 to 40% of total body mass. The type of muscles that connect to bones and allow to perform a wide range of movements and functions.
Skeletal muscles are easily controlled and work according to the desire .
Skeletal muscles are specialized tissue that is connected to bones and allows movement.
Therefore, the contractile units of skeletal muscles are myofibrils. Thus option 1st is correct.
Learn more about myofibrils here:
brainly.com/question/1194286
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D. store genetic information
Answer:
A. gravity
Explanation:
gravity is a force that makes things go downwards in this case Jeannie put her soccer ball on the ground on the side of the hill, the hill was in the top hence the ball went downward
brain is the organ which does play a role in mechanical or chemical digestion
