Microorganisms causing diseases that characteristically are waterborne prominently include protozoa and bacteria, many of which are intestinal parasites, or invade the tissues or circulatory system through walls of the digestive tract. Various other waterborne diseases are caused by viruses.
As the Moon revolves around Earth, both objects also progress in orbit around the Sun. After completing one revolution with respect to the stars, the Moon must continue a little farther along its orbit to catch up to the same position it started from relative to the Sun and Earth.
Technically, Earth Does Not Orbit Around the Sun. The discovery that Earth revolves around the Sun was revolutionary. It fundamentally changed how we viewed the cosmos, as well as ourselves. But the Earth does not revolve around the Sun. At least, not exactly. Time to get pedantic. Technically, what is going on is that the Earth, Sun and all the planets are orbiting around the center of mass of the solar system, writes Cathy Jordan, a Cornell University Ask an Astronomer contributor.