Your body uses water in all its cells, organs, and tissues to help regulate temperature and maintain other bodily functions. Because your body loses water through breathing, sweating, and digestion, it's important to rehydrate by drinking fluids and eating foods that contain water.
c. telegraph came before the telephone obvi and the rest are not communication. telegraphs could be sent over seas
It speeds up the expansion of the universe.
It's hard to understand things complex so when somebody is good at it I applaud them.
The right to freely choose a state of life