C. Every 3 years I believe, for every two years
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:
more technology can help come up with more vaccines and cures to increase our health
Explanation:
Most deaths occur to people 75 years and older
