In this task, you are given a question and answer for that. The answer will fill in the blank or will complete the unfinished question. Your task is to provide an explanation based on the given question or fill-in-the-blank statement, and answer.

[Q]: Question: If Mona is comparing an orange and an apple and she determines that the apple is more massive then the orange, which object has more gravity? 
 Answer: apple
[A]: Objects with greater mass have a stronger force of gravity between them.


[Q]: Question: Quent increases the energy of a liquid. He notices that the particles in the liquid 
 Answer: speed up
[A]: As the liquid particles lose energy, their movement slows down even more. As their movements become slower and slower, the attractive forces between become stronger.


[Q]: Question: If Bob stops exercising, his heart muscle should become 
 Answer: weaker
[A]:
When a person exercises regularly, and is fit, the heart undergoes certain long-term adaptations. The heart muscle gets stronger, and expels more blood with each contraction.