How are liquid wastes treated at a wastewater treatment plant?

Which best describes the nucleus of an atom a. it is where all of the particle s of the atom are located b. it is the negatively charged part of the atom c. it is where the electrons and the protons are located d. it is the part of the atom with the greatest mass

During binary fission, what events must occur before the cell splits into two new cells?

Which number represents a basic ph, 4 or 9? numerical answers expected! answer for blank 1: i'll give