Yes. Your body requires water to dilute the sugars ingested in the the drinks. In a hot environment your body would also need to sweat. So adding high sugar drinks puts pressure on your body and you can become dehydrated.
<span>C. People must actively register to be organ donors Usually you have to fill out the health survey and sign stuff and then you get a little symbol to be an organ donor on your ID. this shows the people when you die that you signed up to donate. :)</span>
C - both A and B. The digestive system does those two.
Abstinence is the most effective method of preventing STDs and pregnancy. In any sexual education courses, abstinence is the most suggested form of preventing these things from happening. When a person consciously chooses to make this decision it will always lead for the better good. Some religious groups also practice this method. This is not to deprive a natural human need, but rather to instill a value in individuals, especially the young ones, that there is really no rush to be doing this and the right time will always be waiting.