Answer:
if ur asking which one of those answer choices is the right one, it's D! Deliver oxygen to every blood cell <3
Explanation:
This involves transport of oxygen from the lung to the tissues by means of the circulation of blood.
Answer:
Human activity can affect the amount of carbon in the atmosphere. When fossil fuels like oil, coal, and natural gas are burned, carbon dioxide is released into the atmosphere as waste.
Explanation:
False.
It can either be called Dependent or Independent variable.
Hope this is correct :)
Have a great day
