Answer:
I believe it's c I could be wrong but I'm pretty sure
Answer:
Large molecules made up of many small organic molecules that are often referred to as monomers. Macromolecules are polymers of monomers.
sorry if I am wrong
The answer is A. Uses too much energy.
The answer is Arteries
Arteries carry oxygen-rich blood from the heart to capillaries. On the contrary, veins carry blood without oxygen from the capillaries to the heart.
Arteries are very flexible and yet strong blood vessels so that efficient transport of oxygen-rich blood along the bloodstream through the organism is enabled.
