Which is NOT a part of a bivalve?
A. mantle
B. mouth
C. radula
D. shell

radula

Explanation:

C.  radula

Explanation:

frogs. the lower the ph the higher the acid content. frogs have the highest tolerance in this scenario.

step 1: nitrogen fixation- conversion of atmospheric no₂ into forms useful to plants by lightning, bacteria, and cyanobacteria.

step 2: nitrification-process of converting ammonia to nitrite or nitrate.

step 3: assimilation-plant roots absorb new form of nitrogen.

step 4: ammonification-conversion of organic nitrogen to ammonia by bacteria involved in decomposition.

step 5: denitrification-bacteria turns the decomposed matter back into n₂o, which is released into atmosphere; repeat cycle.