Natural barriers include the skin, mucous membranes, tears, earwax, mucus, and stomach acid.
Answer:
D.
Explanation:
The respiratory system is responsible for breathing—that includes oxygen.
The answer is Cortisol. It is a steroid hormone found in glucocorticoid class of hormones and at the point when utilized as a solution, it is known as hydrocortisone. It is delivered in people by the zona fasciculata of the adrenal cortex inside the adrenal organ.
Answer:
aww :(
don't give up it's going to get better.
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I have felt like this many times. It will get better.
