Answer:
Students have strong reasons to get involved in debate over gun laws.
Answer:
There were a lot of people at the museum
Oscar started to worry about the test
When the cops arrived, the criminal ran outside
He checked his cell phone for any messages
Answer:
We would start measuring things in random units, let's say horses, but it would be incorrect because not all horses have same lengths, they come in all shapes and sizes.
Explanation:
Units of measurement are important because it is something everybody can use as a base unit, like for example a specific language like english.
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-Chetan K