Question

give reason why each map has a scale
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Answer 1

Explanation:

All maps are modeled representations of the real world and therefore the features are reduced in size when mapped. In other words, scale is the measurement of the amount of reduction a mapped feature has to its actual counterpart on the ground.

Answer 2

Answer:

Scale is the relationship that the depicted feature on map has to its actual size in the real word (more: map scale).  All maps are modeled representations of the real world and therefore the features are reduced in size when mapped.  In other words, scale is the measurement of the amount of reduction a mapped feature has to its actual counterpart on the ground.