All numbers are used in science. There isn't really a specific way two is used in science but if you'd like to know two can be used for the amount or quantity for a chemical. There is such thing as math science where a bunch of people discover new things like prime numbers (which are numbers that can only be divided by itself and 1) and more.
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The number 14 is used in chemistry, astronomy, and religion.
to make measurements
The metric system, based on the number 10.
Googolplex. However it is useless to science because it exceeds the number of particles in the universe!
Science questions are science questions.