Answer: d energy efficiency
Explanation:
Because none of the others would make sense and I got it right
<span>molecule
Compounds are composed of molecules. </span><span>Compounds are not necessary to form mixtures. There is an “or” in the said definition and certain authors to support this claim. These includes examples that can state clearly this argument, table salt as a mixture of independent elements, Na and Cl. Brass is composed of zinc and copper. Steel is from carbon and iron. Lastly, you can have gold, nickel and palladium or platinum to form white gold. </span>
The answer is if it's profitable and useful
An ore is a type of rock that contains a specific amount of minerals that have an economic value, such as an iron ore, manganese ore, gold ore, Lead ore, etc
Basically any mineral as long as it can be sold
D. The purpose of bonding is to have filled outer shell so that the atoms are stable and the element is unreactive
Im guessing its probably thyroid