Answer:
A. Increased thirst
Explanation:
When you're thirsty, not even fully dehydrated yet, you commonly feel thirsty. That's your body telling you that you should be increasing your water intake. Hope this helps! (:
C: Cell
Because these are all in the cardiovascular system
Waterborne<span> diseases are conditions caused by </span>pathogenic<span> micro-organisms that are </span>transmitted<span> in water, the d</span>isease can<span> be spread while bathing, washing or drinking water, or by eating food exposed </span>to <span>infected water</span>
