Answer:
Nonpoint-source-pollution
Explanation:
<h2><u>
Answer:</u></h2>
C: They should try to reproduce Dr. Maxwell's research to verify his results
<h2><u>
Why?</u></h2>
Other scientists may or may not agree to Dr. Maxwell, so they should test Dr. Maxwell's research again to see if his conclusion is true or not.
Hope this helps!
2MnO4 - + Fe2+ ------> Fe2(MnO4)2
Solid, Liquid, Gas, and Plasma