What transports oxygen to the brain?
microscopic organisms some prokaryotes feedback mechanisms chemical messengers animals with backbone aquatic organisms a fluid connective tissue prokaryotic cells
A B C D E F G H
Blood carries oxygen to the brain.
A fluid connective tissue carries oxygen to the brain
What transports oxygen to the brain? (A) microscopic organisms (B) some prokaryotes (C) feedback mechanisms (D) chemical messengers (E) animals with backbone (F) aquatic organisms (G) a fluid connective tissue (H) prokaryotic cells