Stressing could cause many things, which may include you getting very emotional because you are all caught up in your mind you are stressing and keeping it all jumbled up which could make your mental state worse.
The circulatory system is system in the human body that provides a network through which our blood flows constantly.The human cardiovascular system is considered closed because there are no holes for blood to enter or leave the system. Correct answer: D
In the closed circulatory system the blood stays confined within the vessels and heart.
It tricks the cells of the intestines into secreting water. It tricks the cells of the intestines into secreting ions
