The answer is
A. The heart is a muscular pump that acts to circulate blood to deliver oxygen all over the body.
The answer is To highlight that a physical activity requires a body to use energy. Hope this helps! : )
I think it's the seel date should not be expired for the first one
Answer:
The answer is b) Breaks in the mucosa and presence of corrosive secretions
Explanation:
The peptic ulcer disease is likely caused by the weakening of the mucosa coating by H. Pylori bacteria (or other types of drugs), and the passage of corrosive secretions (such as acid and pepsin) to the lining that is beneath the mucosa coating.