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I think that it is relative size hope it helped :)

Explanation:

relative size

Explanation: all coins have their distinct different shapes and relative sizes so most machines that count coins usually count by how wide the coin is

i think they came to washington to protest

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)