What causes a concussions in football? EXPLAIN

Amino acids are important to the body because they build carbohydrates proteins complex carbohydrates simple sugars fats

Bulimia nervosa cannot be prevented, but it can be treated if diagnosed early. true or false? answer- false

You are travelling on a long non-stop flight from tahiti to tampa. you have been in the air for about 7 hours and have not moved, since you boarded the plane at tahiti. you need to use the rest room and on standing up feel dizzy. the best explanation for your dizziness