What type of rock is primarily the cause of sinkholes? a. granite
b. marble
c. limestone
d. igneous

limestone, carbonate rock, salt beds, or rocks that can naturally be dissolved by groundwater circulating through them.

Explanation:

the answer is: trichonympha lives in the gut of termites and digests cellulose eaten by the termite.

this is an example of a symbiotic association of a protozoan with its mode of association.

hope i

-lavira: )