It's either A or C if you need more information on why just ask it's kinda weird to explain
Answer:
Reduced calcium in bones.
Explanation:
When you stand, you don't lose calcium because it is a naturally occurring chemical in your body. To increase calcium levels, drink milk.
Answer:
I think the answer is grain .
Explanation:
Because grain is a part of the five main food groups and iron or fruits or water hasn't been mentioned their
The part of your brain that controls your heart and lungs is the medulla.