Explanation:
Temprature:the body must maintain a relatively constant temperature if it gets to hot the body employees vasodilation to cool down this delites the blood vessels allowing more heat to escape from them through the skin
Glucose: the body must regulate glucose levels to stay healthy. When glucose levels become to high the body realeases a hormone called an insulinwhen they become to low the body converts the glocogenin the blood to glucose
Toxins :in the blood can distrupt the body's homeostasis thus it signals the urinary system to ensure that the toxins are excreated
Marine biologists study changes in the ocean. so they will look at the chemical composition of deep waters and see how consecrated the oxygen is. They will also study the movements of the plates because when planted move it usually makes new food for deep life
they will also check animal concentrations in certain areas.
Another thing they do is track animal movements. this could be by putting a tracker on a whale or a shark or anything and watching its depths it goes or watching the distance it goes in a day.
The answer is D.
It is the most needed because if the waste of the body doesn't get removed then you will become very ill and possibly die.
Hope this helps! :)
The correct answer is letter B. A notochord is what separates chordates from other species. It is described as a c<span>artilaginous skeletal rod that supports that body of chordate animals. This particular body part is very much visible in different kinds of fish.</span>
D. Epidermis netted veins
vascular rings
