Experiments have demonstrated that the "words" of the genetic code (the units that specify amino acids) are? -three-nucleotide sequences.
-nucleotide sequences of various lengths.
-single nucleotides.
-two-nucleotide sequences.

the correct answer is b

bacteria could be both, harmful and to us. harmful bacteria could make us sick and probably even by getting the chances of getting a disease, but good bacteria fight it off with your immune system. there is always bacteria everywhere we go. we need to make sure to wash our hands after using the restroom, before eating, after eating, after petting an animal too. so you see, bacteria is everywhere and is harmful or . i hope this . : ) : ) : )

a compound light microscope is used to magnify objects in steps.  

hope it