How does blood maintain homeostasis in the body?

Homeostasis is a self-regulatory process by which organisms maintains stable internal environment to their sustenance. In humans, blood plays an important role in maintaining homeostasis by performing many functions. Blood supplies oxygen, nutrients to the tissues and removes waste such as carbon dioxide, urea and lactic acid from cells. It circulates chemical messenger such as hormones to the target cells. It regulates body pH, body temperature and osmotic pressure of the blood.        

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

matthias schleiden

robert hooke

rudolph virchow

anton van leeuwenhoek