Puberty is when adolescents reach sexual maturity and become capable of reproduction.
<h3>What is an Adolescent?</h3>
An adolescent may be defined as a period of an individual's life who has expired the phase of childhood and are about to enter into the phase of adulthood.
During the time of adolescents, physical and emotional changes occur and are influenced by the endocrine system, which releases hormones into the bloodstream.
In adolescents, puberty characterizes the commencement of adolescence when the reproductive abilities of adolescents evolve.
Therefore, it is well described above.
To learn more about Adolescents, refer to the link:
brainly.com/question/1956818
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The answers should be
1. B
2. A
3. D
Your functions and blood are all moving by the force of gravity, so when everything is raised or lowered(moving your arm), your pulse wave changes. This can also result from subtlty in higher blood pressure, when activity occures. Just as your pulse waves changes in the rest of your body when excersising, you will have a slight change in pulse when simply moved your arm up and down, you're gettin' that blood pumping! ;)
Hope this helps :)