what is the value of igneous rocks to humankind?

4 answers

Since this is not my area of expertise, I searched Google under the key words "value of igneous rocks" to get these possible sources:

https://www.google.com/search?client=safari&rls=en&q=value+of+igneous+rocks&ie=UTF-8&oe=UTF-8

In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.

Don't just copy the material. Express the ideas in your own words. Although this will take more time and effort, you will learn more.
igneous rocks to Hunan kind
I want to know that what is the value of igneous rock to humankind
What is the value of igneous rock to human