In science, the word evolve describes the natural processes that cause organisms to develop and diversify. Why did the video use the word evolve to describe the change that occurred from unicellular to multicellular life on Earth?

the number of valence electrons for each molecule or ion is shown beneath the structure. remember hydrogen will not have more than two electrons. this hydrogen is part of a covalent bond (sharing two electrons). a double bond here would cause hydrogen to share four electrons with phosphorus.

what is the question?

the ratio of the conjugate base to the acid required to attain the desired ph.