What are the two types of minerals? a.
industrial and environmental
b.
valuable and invaluable
c.
metallic and nonmetallic
d.
important and unimportant

The correct answer is C. Metallic and nonmetallic

Explanation:

Minerals are natural substances with defined properties. Moreover, minerals are essential for living beings and they compose rocks. Besides this, minerals are classified into two broad categories according to their composition: metallics and non-metallics. In this context, the metallic category includes any mineral such as aluminum or iron because these minerals contain metals, while others such as gravel or halite (nonmetallic) do not. According to this, the correct answer is C.

every society, in order to meet the needs of it's people, has to answer three basic questions:

- what should we produce?

- how should we produce it?

- for whom should we produce it?

this questions must be answered in order to, option b, aid in production decisions.

every country can't produce everything, no matter how rich their land is. it may be a matter of technology, resources or geographical conditions. so, these three questions must be resolved in order to get the most of the production of each land.

hope this !

answer; ratification;