The answer to this would be. Depression!!!
Answer:
In my opinion, if you feel that using a double mask will make you feel safer, then you should use it, but using a mask is important. Now, if you are already fully vaccinated I don't think you should use a mask unless you want to, which is totally fine.
Explanation:
The answer is the last choice. "a behavioral change and is not related to the internal environment".
I hope this helps.
Answer:
Usually, aldosterone balances sodium and potassium in your blood.
