Vegans are especially at risk for B12 deficiency due to the lack of the vitamin in their diet. Vegetarians are also at risk but due to less strict dietary constraints their chances for B12 consumptions are drastically higher <span>than a vegan's. B12 is found primarily in meat, eggs and dairy products.</span>
Answer:
Muscle tissue consists of elongated cells also called as muscle fibers. This tissue is responsible for movements in our body. Muscles contain special proteins called contractile protein which contract and relax to cause movement. Muscle tissues vary with function and location in the body.
Explanation:
Except what? the list is missing
C is the orientation answer hope it helps you
I think the circulatory system is the best body system because we need the heart to stay alive, many people live with only one lung. but we need the respiratory system to let oxygen in, and let carbon dioxide out.