What happened to the oyster shells?

Please get your
interactive notebook
and read the board!

Thanks!
Does lower pH water break down the
shells of oysters?
Experimental
group
Control
group
Keep in mind:

Oysters shells are
Calcium Carbonate
CaCO3 which is a basic
material.
Climate change is causing oceans to
become more acidic.
CO2
+ H2O  H2CO3
Drought – less freshwater reaches
the Bay, less alkaline material