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: Katie is looking at particles of reactants, and is noting that they currently are moving very slowly, and that they seem to have a little energy. These particles are likely at a temperature that is 
 Answer: lower
answer:
At higher temperatures, particles of reactants have more energy, so they move faster. They are more likely to bump into one another and to collide with greater force.


question:
Question: Ray was traveling in rocket leaving orbit. He keeps the empty fuel containers on board so the ship can fly 
 Answer: lower
answer:
By using multiple stages, empty fuel containers could drop away. This reduced the mass of the rocket so that it could fly higher.


question:
Question: As fewer computers have made work harder for people we have had to do 
 Answer: more work
answer:

More advanced farming practices allowed a single farmer to grow food for many more people.