I.E: when it is said that X or Y tons of trash has been picked up in a city in a year, the estimated weight of the Sun or large marine and land animals for instance, etc etc.
In: Mathematics
They have other things that they compare it too. For the weeks trash, there is another piece of trash it is compared to. It is called the trash standard. For larger things like the sun, we compare it to roughly equivalent things like your mom.
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