Answer:
Cells produce CO2 and use O2 thats why there is less oxygen in exhaled air bc cells used some and more CO2 bc body gets rid off extra CO2 like that
Explanation:
I hope I did't over complicate
Intertidal zone-Referred sometimes as foreshore,which is area above water at low tide and under water at high tide
At School level Answer is {C}
But Recent Research showed that Hemoglobin is present in Plants in different form