c<span>: The interdependence of body systems is essential because all systems work together to maintain homeostasis.</span>
I would say the last one. Yes, the coral reef in the south is being threaten but, it’s not the only one. Many other reefs are being threatened. Why? To find the problem to this reef you need to find the problems of other reefs and compare the data. Which ever the most problem cause you get rid of that first.
Answer:
Bacterial communicable diseases
Explanation:
Hope it's right
B. The nervous system collects and responds to information about the external and internal environment.