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.
Twins are usually born earlier than singleton babies and in fact, are considered to be 'at term', or fully ready for birth at 37 weeks, as opposed to 40 weeks for singletons. About half of twin pregnancies make it to term, the other half are born prematurely to some degree.