This is true because 6 and 15’s sum is 21.
Polymineralic and igneous rock
Should probably look this up?
Answer:
Explanation:
They are mostly soluble earth materials.
Dissolved loads are products of chemicals weathering.
Examples are dissolved soil minerals, dissolved rock minerals etc.
The products of chemical weathering of rocks dominate the dissolved loads in a stream. Most of these materials are in solution and can travel very far away unless they become precipitated.
