1 Wear safety goggles to protect your eyes. 2  Never use a plunger if a chemical cleaner is present in the drain; you risk splashing the chemical on yourself.  Never remove a trap with chemicals present; you risk burns to your skin. Call a professional but make certain you inform them of what chemical you used.
Originally Answered: Why is the Moon drifting away by 1 cm each year? Because of tidal forces between moon and Earth. As Earth and moon pull each other, bulges are created on the surface.
The moon has distanced itself (receded) from Earth in this way, by hundreds of thousands of kilometers, in its long association with Earth. It is calculated that the current orbit of the moon increases in diameter by about 3.8 cm (about 1 1/2 inches) every year as a result of this effect. Over millions and billions of years this has added up. The moon is currently moving away from the earth about 3 to 4 times faster than in the past. The spacing of the major oceans and continents allows for a more powerful effect than earlier. But it will not continue this way indefinitely.