What does the column number of the periodic table tell you about the nonmetal elements ? a. the number of protons in its outermost shell b. the number of electrons in its outermost shell c. the number of outer shells in the atom d. the number of bonds possible in the outermost shell

Gabriel is at a stage where his body is changing physically; he is growing facial hair and building muscle. he is also just starting to make sperm. what is most likely gabriel’s age? 5 12 17 21

What will happen to a population of predators if there is a sudden, temporary increase in the number of prey? a. the population of predators will be uniform with no change. b. the population of predators will increase first and then decrease slowly. c. the population of predators will increase continuously.

What types of energy transfers and energy transportations are involved in the domino chain reaction?