The answer would be Tunica submucosa.
Answer: A
explanation(from a website)
Stay calm. ...
Remove the stinger. ...
Wash the sting with soap and water.
Apply a cold pack to reduce swelling. ...
Consider taking over-the-counter pain medication.
I think the answers is the first one
<span>Coral bleaching that occurs because of the introduction of foreign substances is xenobiotics.
The answer is C.</span>
