The organization of different levels of authority

Which outcome is not caused by gravitational forcea. gas and dust come together to form a planet b. planets orbit a star c. two atoms come together to form a molecule d. stars cluster to form a galaxy

Which of the following regions suffers the most from acid rain? a. the area around vancouver c. the area below atlanta b. the area below detroit d. the area above montreal

Some of the incoming solar radiation is absorbed by the floor. identify the type of electromagnetic energy reradiated by the floor