Answer:
There are 7800 meters in 7.8 km
The correct answer is that the shells of clams and other mollusks dissolve when the pH becomes more acidic.
This is because the shells of clams and other mollusks are made of calcium carbonate that is dissolved in acidic conditions. The pH needs to be low to dissolve calcium carbonate into it. It takes few days to dissolve the shell completely.
They relate because they both have to do with the behavioral patterns of the cycle of life. essentially they both are related to way things transform into one another
