My guess would be because the gravity from the Earth's core is constantly pulling the ball towards the ground. It's like the moon. Why doesn't the moon just float away in space? Because Earth's gravitational pull keeps it rotating around it. Therefore, the ball will always be pulled towards the core which keeps it from from rolling forever due to friction. But i may be wrong, even though this a quite a good answer, hope it is right!
They share covalent bonds
Answer:
I don't know about these problems
Explanation:
I don't know about these problems at all.
Hello
The jovian density is

, while the density of terrestrial planets is much higher. For instance, the earth's density is

. The reason of this difference is in the different chemical composition: while jupiter is made of gas (mainly hydrogen), with lower density, while the terrestrial planets are made of solid and liquid, with compounds of higher density.
The answer is; E
The key word is photochemical smog that differentiated it from industrial smog that are formed from different conditions. Photochemical smog is majorly driven by the sun that splits nitrogen oxide pollutants in the air into nitrogen and oxygen. The oxygen forms OH radicals with the water vapour in the air. The OH forms radicals with hydrocarbons pollutants in the air which ultimately form aldehyde peroxides that are a health risk.