If your body lacks enzymes that break down carbohydrates, it would be unable to get sugar molecules for energy production. If you lacked the enzyme to digest proteins, you may not absorb enough amino acids?
The correct answer is a structure that would differentiate the hollow heart into chambers to separate oxygenated blood.
The heart has four chambers: two ventricles and two atria. The right atrium gets oxygen-poor blood from the body and pumps it to the right ventricle. The right ventricle pumps the oxygen-deficient blood to the lungs.
The left atrium gets oxygen-enriched blood from the lungs and pumps it to the left ventricle, and the left ventricle pumps the oxygen-enriched blood to the body. The right and left atrium are distinguished by a wall of tissue known as the atrial septum, and the left and right ventricles are separated by the ventricular septum.
I think the right answer is d!
1. More nutritious
2. More efficient growing
for example, they can be resistant to droughts or rough winds or pesticides.
