Question

Since we began burning fossil fuels in large quantities during the Industrial Revolution of the 18th and 19th centuries, there has been a ____ in the average acidity of surface ocean water.​

a. ​170% rise

b. ​30% drop

c. ​3% rise

d. ​30% rise

e. ​300% rise

Answer

This answer is hidden. It contains 81 characters.