Answer:
The brain has three main parts:
Cerebrum.
Cerebellum.
Brain stem.
Explanation:
It best described as Changing, through life
for Example :
The older we are, the less we need caloric intake because we do a lot less physical activity
But when we're old our need for fiber intake will increase because we can't digest our food like our younger days
Answer:
Conserve energy
Explanation:
Sloths are considered as arboreal mammals *( that is living on trees) and they have very less muscle mass, which is about 30 % lesser than that of similar sized mammals. This is because their muscles are made up of slow-twitch fibers, which provide them a lot of power to withstand any stress while not using a lot of energy.
Therefore, their lesser muscle mass help them in conserving energy
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