Letter D.
Homeostasis means: An organism maintaining a constant internal state in a constantly changing invoronment.
The man running will soon be very hot. Therefore, he will sweat to keep a constant body temperature.
I hoped this helped! :)
Answer: Not sure. please disregard my previous answer
Explanation:
I think the correct answer from the choices listed above is option A. Barnacles living on whales is a scenario that represents mutualism. This is because both of the organisms benefit from their existence. Hope this answers the question. Have a nice day.
Phenotype is what makes a organism look the way they do on the outside. Hope it helps!