The correct answer is letter B. The food molecules that cannot be digested need to be eliminated from the body. This can be done by taking in certain kinds of medicines that stimulate the digestive tract to pass out the food molecules that are indigestible.
Answer:
The group that received the placebo is the control group.
Explanation:
This group is known as the control group.
Answer: The heart consists of four chambers, two atria (upper chambers) and two ventricles (lower chambers). There is a valve through which blood passes before leaving each chamber of the heart. The valves prevent the backward flow of blood.
<span>Muscle groups need 48 hours to recover. Muscle gains decease after not being worked for 72 hours. True</span>
