So how many stars are there in the Universe? It is easy to ask this question, but difficult for scientists to give a fair answer! Stars are not scattered randomly through space, they are gathered together into vast groups known as galaxies. The Sun belongs to a galaxy called the Milky Way.
Reverse osmosis. Reverse osmosis (RO) is a water purification technology that uses a semipermeable membrane to remove ions, molecules, and larger particles from drinking water.
Re-Use Waste from Reverse Osmosis (RO) Filter. Many of us use Reverse Osmosis Filters (RO filters) to purify Drinking Water, in areas with high TDS (Total Dissolved Salts) content in the Water. Around 75% of the Water fed into a RO filter, is wasted. Only 25% gets extracted as drinking Water.