1) when the first antibiotics became available in the late 1940s and early 1950s, these antibiotics were effective against all bacterial infections. today however, there are a multitude of antibiotic resistant bacterial infections. what conclusion can be drawn?

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes

hybridization actually occurs frequently in nature. evolution is derived from the process of hybridization that creates things with different traits. this leads to the species changing and evolution occurring. hope this : )