Which set of substances listed includes both acids and bases? a. pH = 1, pH = 3, pH = 6

b. pH = 3, pH = 2, pH = 9

c. pH = 7, pH = 8, pH = 9

d. pH = 8, pH = 10, pH = 14

What does the cell nucleus do or, how does it function?

Which factor is likely to impact the possible number of compounds? presence of unlimited number of elements in the periodic table the inability of atoms to align perfectly with other atoms the ability of all elements to react with every other element all elements being equally reactive

Which of the following reasons best explains why a scientist would want to replicate gregor mendel's pea plant experiment? a. to discover new aspects of the natural world b. to test the predictions of current theories c. to explain recently observed phenomena d. to test the conclusions of prior investigations