The shells of clams and other mollusks dissolve when the ph becomes more basic dissolve when the ph becomes more acidic melt when the temperature increases bleach when the temperature increases

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.

answer; ///i believe that the correct answer is (a) specialized cells)

the answer is c) an oak tree