Alright i have a serious question for the guysTITTYS OR THIGHS

What are two reasons for why a species might disappear from the fossil record?

What amino acid is coded for by this sequence after the mutation

According the inverse square law, doubling the distance from the source of the sound, a speaker, for example, will drop the sound 6 db each time. if you were standing in the back of an auditorium, 32 feet away from a speaker not using any amplification, would you be able to hear a speaker clearly? why or why not?