Answer:
i think bubbles tbh
Explanation: oxygen, carbon dioxide and hydrogen produces bubbles
Hemoglobin has tetrahedral structure containing four heme groups that surround a globin group.
Heme is ringlike organic compound also known as a porphyrin to which an iron atom is attached. There are four iron atoms that bind four oxygen atoms and transport them to tissues.
The answer is "the ice-caps" from the north and south pole.
Answer:
The answer is B. by way of an open watershed.
Explanation: