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: When we lower the temperature of water it becomes 
 Answer: more dense

A: When a volume of water is cooled, the molecules move less vigorously, so same number of molecules takes up less space and the water is denser.
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Q: Question: Reid is modelling the greenhouse effect in a simulation. If he increases greenhouse gas levels, the greenhouse gas effect will 
 Answer: increase

A: An increase in greenhouse gases leads to greater greenhouse effect.
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Q: Question: When Milo cools down a pan on the stove, the particles begin to 
 Answer: move more slowly

A:
When particles move more quickly, temperature is higher and an object feels warmer.
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