What is a codon and what is a anticodon

During convection, less dense fluid rises and denser fluid sinks.

At which point is crust neither created nor destroyed? island chain mid-ocean ridge divergent boundary transform boundary

How did alexander fleming’s research solve a societal problem? he developed ways to treat inherited diseases. he advocated for regular hand washing to kill germs. he discovered a new type of medicine that could treat infections. he discovered the cause of mad cow disease, an emerging disease.