Why is the study of population composition
very
verit useful? Give reasons

Some reasons are:

It helps to find out the structure of population, it can also help us to study on various demographic indicators. It shows us death rate and growth rate, it can also help us study the population in systematic way.

for me i have felt invisible when i was clearly struggling,or,i made a great achievement ,and,nobody took to notice me either because they just didn't see it,or,people just turned their back on me.i can see a person being invisible by choice,or,without choice like i did.the people who are invisible by choice don't try to talk to people,don't try to make friends,and,keep to themselves.i haven't been one of those people so i couldn't give you a reason.

hope this and can i get bainliest my dude : d