Which statement best describes the mass of water when it recycles in the atmosphere

What do isotopes of uranium have the same number of? what do they have a different number of? a) same number of protons; different number of electrons b) same number of protons; different number of neutrons c) same number of electrons; different number of protons d) same number of neutrons; different number of protons

Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan

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