Answer:
D
Explanation:
hope its right..if not im srry
The advantages of artificial blood are as follows -
a) It is easy to produce large amount of artificial blood and thus it helps in reducing the blood shortages.
b) The chances of spreading a disease through blood are also reduced as the blood is made in a safe and secure place. Also the full history of artificial blood is known to the doctors.
What is the most common lipid characterized by a four-ring core structure found in animals?
Cholesterol
Hope this helps.