It is one of the four layers that surround earth the other three are rock, water, air.
Pepsin digests potato because it mainly contains starch
Answer:
tagging the sharks
Explanation:
To learn their behavioral patterns researchers are tagging the sharks. Doing so allows the researchers to track their movements individually and gather data as to how they move, where they migrate to, how many migrate together, etc. All this information is extremely valuable and when pieced together can shed light on why they have certain behavioral patterns or traits.
Answer:
During excercise there is greater cardiac output because the athlete requires more blood
