instruction:
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.
question:
Question: Carla is pushing two carts down a street. One cart is heavy, the other is light. The heavy cart, compared to the light one, will accelerate 
 Answer: slowly
answer:
The greater the mass of an object, the less it will accelerate when a given force is applied.


question:
Question: If Milo is measuring isotopes and he notices that they seem to decay slower then average, what does that mean about the age of the specimen he is examining? 
 Answer: older
answer:
Because these isotopes decay more slowly, they can be used to date much older specimens.


question:
Question: If Milo wants to make his water saltier and begins removing salt to the glass, what happens to the density of the glass of water? 
 Answer: decreases
answer:

If salt is added to a volume of water, there are more molecules in the same volume, so the water is denser.