GCSE Chemistry > Haber Process. The Haber process is the process by which Ammonia is produced. Simply put, it involves combining Nitrogen and Hydrogen together as the second equation below shows. This is a reversible reaction. The nitrogen needed for the reaction comes from the fractional distillation of liquid air.
Sooner than later is a pretty new expression, picking up in the 1940s, though sooner or later is a much older and more common expression. As to its grammatical correctness; it is certainly idiomatic and idioms seem to be allowed a lot of latitude on the grammatical front.
Plus, pre-wedding events, like bridal showers and bachelorette parties, are great for building momentum for the main event (aka your wedding). When a bridal shower is, say, six months before your nuptials, your guests' excitement for your wedding will likely die down well before the wedding invitations go out. Throwing a bridal shower less than a month before the wedding day also isn't ideal for a few reasons.