A, the mass number, is equal to... A. neutrons + electrons

B. protons + neutrons

C. protons + electrons

D. protons

The ocean layer of a rapid temperature change with deph is known as the

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.

Which is a function performed by stem cells in the skin a. replacing lost skin cells b. making cells for the intestines c. growing new organs d. differentiating into brain cells plz apex