Write the formula for the polyatomic ion and name each of the following compounds:
a. Na. Co
b. (NH4)2S
c. Ca(OH)2
d. Sn(NO2)2

The grooves or folds of the brain are called

Which class of molecules functions as chemical signals? hormones water carbohydrates proteins

Which of the following natural processes is most likely to support the formation of an underwater sinkhole? a pollution buildup from deposited minerals b limestone cave collapsing due to changes in sea level c erosion of large amounts of sand moved by ocean waves d oxidation of rock formed by chemical weathering