Yeast has many commercial uses i the . select all that apply a) breads b) fuels c) sodas d) wine

The first amino acid of a new polypeptide chain is

Why are common names a problem for scientist?

Ihave no idea how to solve these. plus there's another question that is 2) a 10 kilogram meteorite is collected in space and brought back to earth. it is composed of 1.25 kg of uranium-238 and 8.75 kg of lead-206. how many u-238 half lives have passed? what is the approximate age of the meteorite?