ANNOUNCEMENTS

 H2S, or hydrogen sulfide, is a colorless gas known for its characteristic rotten egg odor at low concentrations. It's a naturally occurring compound, but can also be produced by industrial activities and the breakdown of organic matter. While it serves as a warning at low levels, it can be dangerous at higher concentrations, causing health issues and even death.  July 31 we can put a day class or evening class on in person or zoom.