<u>d) observing how the heart contracts to pump blood
</u>
Well vitamin a can hurt you by headaches, liver damage and birth defects. Anabolic steroids also have similar health risks such as liver damage but also include high blood pressure and kidney problems.
Hope this helps.
The smallest part of a teen's diet should be sweet drinks, candy, sweet foods, cakes, high-fat foods, junk foods (that's all one category). ( sorry if i’m
wrong <3 ! )
Water and hydrocloric acid in our stomachs.
