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: Dana is looking at electrons, which are moving at higher energy levels. Because these electrons have more energy, in relation to the nucleus they are 
 Answer: farther
[A]: Electrons at higher energy levels, which are farther from the nucleus, have more energy.


[Q]: Question: Jeff heated the pot of boiling water. What happens to the dissolved oxygen contained within the water? 
 Answer: it decreases
[A]: Warm water cant hold as much dissolved oxygen as cool water, so an increase in the temperature of water decreases the amount of oxygen it contains.


[Q]: Question: Bob increased the rope segments on his pully; this means he will need to use _____ force on it. 
 Answer: less
[A]:
The more rope segments on a pully that are helping to do the lifting work, the less force that is needed for the job.