amortegaa805
04.12.2020 •
Chemistry
Question 3
Every few hundred thousand years, the magnetic poles of Earth reverse. Rocks that contain iron provide a record of both normal and reversed magnetic
poles. The diagram below shows the pattern of normal and reversed magnetic poles as recorded in the rocks on either side of the Mid-Atlantic Ridge
How does this show evidence of seafloor spreading?
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Ответ:
It can only detect the difference between strongly acidic and basic solutions. Litmus paper turns red below pH < 4.5 and turns blue at pH > 8.3. It cannot test changes in pH between this range which is where neutral pH is located (pH 7).