Answer:
c
Explanation:
Gas exchange. Gas exchange occurs as a result of respiration, when carbon dioxide is excreted and oxygen taken up, and photosynthesis, when oxygen is excreted and carbon dioxide is taken up. The rate of gas exchange is affected by: the area available for diffusion.
None; sharks don't have bones, instead, they have strong cartilage, much like what our noses are made up of
C It controls what is allowed to enter or leave the cell.
Answer is A. I kid chemistry a while back but I am pretty certain it is A.
C paired nitrogen bases. hope i help don't forget to go subscribe to king kevin on youtube its my channel i have 840 subscribers plz go subscribe and be active thank you.
