Endospores are commonly found in soil and water.
Exospores and endospores are produced by some members of the cyanobacteria.
Cyanobacteria are commonly found in soil and water.
What are commonly found in soil and water?

a: chlorofluorocarbons
b: space
c: cyanobacteria
d: humans
e: bacteria
f: Organic compounds
g: planets
h: hydrocarbons