The relationship between the units of the exercise is that they all belong to units of length.
Explanation:
The units of length are the quantities that serve to provide information regarding the distance between one point and another point. The meter is the standard length unit for the International System. On the other hand, the millimeter and the micrometer are the submultiples of the meter. For example:
I believe it's birth rates r high because if it's it's narrow at the top it's high death and if it's wide at bottom it's high birth rates if I'm wrong I'm sorry
