None; sharks don't have bones, instead, they have strong cartilage, much like what our noses are made up of
Answer:
I don’t understand...
Explanation:
You didn’t ask a question ummm
Answer:
Well , I think the answer is B
This represents a closed system,and one benifit is that the risk of passing disease between other species is lower than in open system
But still I prefer you to check it out in your book
