Due to the tilt of the earth's axis, a. the north and south poles experience the same seasons at the same time. b. the eastern and western hemispheres have opposite seasons. c. daylight in north america lasts longer in december than in july. d. certain regions on earth can experience non-stop daylight for six months of the year.

What rule is used to determine how many covalent bonds an element can form? a. the number of covalent bonds is equal to six c the number of covalent bonds is equal to five minus the group number plus the group number b. the number of covalent bonds is equal to eight d. none of the above minus the group number select the best answer from the choices provided