Answer: Metal rust
Explanation: Because its changing color
<span>D. Opportunity cost.</span>
Answer:
Hiya there!
Explanation:
The European Commission, for example, conducts its internal business in three languages, English, French, and German (sometimes called "procedural languages"), and goes fully multilingual only for public information and communication purposes.
<em><u>Hope this helped!</u></em> ^w^
Credit sourced from "wikipedia"
