Answer:
The circulatory system is made up of your veins. They carry blood to your heart and away from it. The blood going through your body carries oxygen, nutrients, and hormones, and removes wastes like carbon dioxide.
Explanation:
I believe the answer is a prokaryote.
Purkinje Fibers are the fibers that spread impulses through the heart
Answer:
B. Most aquatic animal bites result from an animal's defensive response to a perceived threat or, on rare occasions, from a case of mistaken identify.
Explanation: