How many neutrons does element x have if its atomic number is 47 and its mass number is 151?

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Ronald wants to see if a new shower cleaner works better in removing soap than his old cleaner. he uses the new cleaner on one half of the shower tiles and his old cleaner on the other half. identify the independent and dependent variables in this experiment. enter your answer in the space provided.

Gene expression is the activation of a gent that results in a question 1 options: protein dna mitochondria