Hi! I believe that the lasers are used for measuring the earthquakes movement and how much worse it is going to be with the next earthquake. But they would also measure how much force there was and how much more or less there will be. :) Hope this helps. :)
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Jupiter, because its the biggest.
Answer:
anser is 20 thank youjnsbsb
From what I understood, the answer is 2a (:
