Question

sedimentary rocks are of great importance to human beings. why?

Answer 1

For general example coal is also a sedimentary rock well we use coal for many things , to run trains we need coal so we need it for transportation.And also study of sedimentary rocks and rock strata provides information about earth's surface that is important to civil engineering. do you know that study of the sequence rock strata is the main source of earth's history so sedimentary rocks also provide scientific development of the country thus it is important there are many other 
importance's of sedimentary rocks .

Answer 2

It is used for transportation and also for building large and famous monuments around the world for millions of tourists.It was also used by early mans for thier historical uses and by this,they found many new inventions that made our life more luxurious