Because blood needs oxygen and thats where it gets the most of it
Hey, thanks for using Brainly.
Could you list the follow so I could help you further?
The correct answer is A
Reactants are the left side of the equation, and the Products are the right side of the equation.
The correct answer is the second choice - peer review process in scientific research exists in order to verify that the conclusions that are made are supported by the data. You cannot make a valid conclusion if you do not have enough evidence or data to prove it - this is why your peers have to go through your research to make sure everything is done according to the rules of scientific research.
Hope this helps.