Answer:
try roots or glacier erosion (sorry if im
wrong)Explanation:
I'd say C because you can't scientifically decide if a person is a good person or not
A isn't right because you can guess what's in the box by weight or sound
B isn't right because you can physically open a clock up or something to see how it works
D isn't right because you can gather data based on what food the dog takes a liking to
E isn't right because you can gather data of the nutrition of popcorn and apples
So that leaves C
Oxygen and nutrients are transported around an animal's body by the circulatory system.
<span>Circulatory system or cardiovascular system includes the circulating blood with the role in the transport of nutrients oxygen, carbon dioxide, hormones, and blood cells. Besides the transport function, it also stabilizes temperature and pH, and maintain homeostasis. The circulatory system is divided into <span>a systemic circulation and a pulmonary circulation.</span></span>
if this was in English I would help you but I dont understand
