Answer: 2. Bending of the arm
Explanation: The second answer choice is the only on that involves use of both the skeletal and muscular system.
Vegans have difficulty in obtaining adequate amounts of vitamin b 12 in the diet because vitamin b 12 could be found or obtained from meat consumptions and are only less in vegetables. That is why they find it difficult to obtain for they don't consume meat which is where vitamin b 12 could be obtained. Vitamin b 12 is essential in the body for it is important in the brain, as well as the nervous system.
can cause a decrease in the blood flow to the heart muscle.
Answer:
D. We can control some of the factors, but not all of them.
