When potatoes are in the ground, do they swell with water when it rains? if not, how do you explain that, and if so, what would be the advantage or disadvantage?

The actual potato only holds energy. The roots soak up the water and transfer the necessary nutrients to the food, rather than the potato gathering it directly. The potato may swell a little bit, however for the most part it isn't able to suction enough, nor does it need to.

hope this helps

1. when the tempature rises,your sweat glands and then springs into action making perspiration. some sweat evaporates with your skin taling heat with it.2.some of the blood pumped by the heart travels by your lungs to get rid of carbon dioxide and pick up oxygen.3.saliva produces by, you drinking water which saliva is 98% of. when mucus builds up in your body it also creates saliva as well as, antibacterial compunds.4.when the core body tempature drops, the shivering reflex is triggered to maintain homeostasis. for example: when you get out the pool you start to shiver because it is cold.