aldaysein
22.09.2020 •
Social Studies
Which state has 25% of all the Appalachian Mountains within it's borders?
A. Michigan
B. North Carolina
C. Tennessee
D. Virginia
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Ответ:
Students have investigated what's going on in the fictional town of Westfield, they learned that the mysterious reddish-brown substance in the water is actually rust, which formed because of a chemical reaction between the iron pipes and the fertilizer substance in the water. It forms when iron and oxygen react in water or in moisture in the air. The reaction of iron and chloride underwater is also referred to as rust. Certain factors speed up the rusting process, such as salt in the water.
Explanation: