Brief detail of a hypothetical research study for personality psychology, focused on or having to do with Grandparents' in relation to grandchiildren's development of personality or child's personality as adult

i guess it’s a and b

jupiter is the largest planet in our solar system, having a mass and radius that are respectively, 318 and 11.2 times that of earth. suppose that an object falls from rest near the surface of each planet and that the acceleration due to gravity remains constant during the fall. each object falls the same distance before striking the ground. determine the ratio of the time of fall on jupiter to that on earth.

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

i think it would be 5