Answer should be A system
Answer:
A mammal because it has a four chamber heart
Explanation:
Answer:
Neurons
Explanation:
Neurons are the cells used in the nervous system
I wish I can help all I can tell you is probably Download Socratic that’s what are used for most answers
"The manner in which the body changes as a natural result of growing older" is called Aging Process. <span>The human body goes through an assortment of changes as it gets older. Muscles, blood vessels and other tissues lose their elasticity. The heart becomes less efficient, bones become weaker and the metabolism slows down.</span>
