Why is the study of population composition important .

The composition of population means the distribution of the number of the population according to characteristics such as age, sex, marital status, socio-economic status. It helps to find out the structure of population. It helps to study on various demographics indicators.

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i believe the answer is:   psychological  experiment

in this experiment, wilhelm wundt became the first person that implement scientific method in analyzing the pyschological phenomenon.

due to this result, wilhelm wundt also able to make psychology to be acknowledged as a separate scientific field from biology.

a. the moon was locked into orbit by the earths gravity as it was passing by and capture hypothesis i think