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.
The moonâs path around Earth is tilted compared to Earthâs orbit around the sun. The moon can be behind Earth but still get hit by light from the sun. In this diagram, you can see that the moonâs orbit around the sun is at a tilt. This is why we donât get a lunar eclipse every month. This diagram is not to scale: the moon is much farther away from Earth than shown here. Because they donât happen every month, a lunar eclipse is a special event.