Can someone help me with this question? its over dilutions in chemistry

What layer of the atmosphere is directly above the troposphere?

When would a bouncy ball have the most potential energy

The diagrams show objects’ gravitational pull toward each other. which statement describes the relationship between diagram x and y? gravity attracts only larger objects toward one another. gravity attracts larger objects only if they are close to one another. if the masses of the objects increase, then the force between them also increases. if distance between the objects increases, then the amount of force also increases.