Answer:
Which of the following statements is true?
The small intestine absorbs food through villi.
Explanation:
1) appearance of beard and moustache
2) broadening of chest and shoulders
3) changing of voice into a more grave one
It is the central nervous system that takes charge of the body's involuntary functions outside conscious awareness. It is this system that is responsible for all of the body's involuntary acts, such as breathing, blinking, etc.
True because, more variation increases the species fitness, the ability to survive and reproduce. Allowing the organism to pass on their beneficial traits (advantageous traits), to their offspring.