I would say A. Because it seems like a logical explanation.
3,000,000,00 is prolly estimated
Answer:
carbohydrates- store energy and provide support and help in mating the energy sorted in the body
lipids- surround and protect cells, regulate cell fucntions and the body and the organism.
The correct answer is (a.) liver. The liver contains the tubules with sinusoids which is lined with macrophages that leads to the central venous structure. A liver is a vital organ that serves as a gland that plays an important role in animal's and vertebrae's metabolism.