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.
Answer:
one class is health-related fieldyk maybe B.Sc in Cardiac Care Technology
Something may irritate it and the reaction the eye has is that it burns. Let's say something got in it, then it burns because something is touching the eye that irritates it and it burns.
