Prairie dogs are a species whose very presence contributes to the existence of the ecosystem in which it lives. Prairie dogs contribute to the soil and water quality in their plains ecosystem. Their foraging retains water in the soil and forces fresh new grasses to continually grow. Young grasses have more nutrients for species such as bison and elk.

This is an example of
A. an abiotic factor
B. a producer
C. a keystone species

Question

Prairie dogs are a species whose very presence contributes to the existence of the ecosystem in which it lives. Prairie dogs contribute to the soil and water quality in their plains ecosystem. Their foraging retains water in the soil and forces fresh new grasses to continually grow. Young grasses have more nutrients for species such as bison and elk.

This is an example of 
A. an abiotic factor
B. a producer
C. a keystone species

anonymous · Answer

It has to be C because i just took me quiz twice and first i picked A that wasnt right so i picked b and that wasnt right so its C keystone species

anonymous · Answer

Sherlock Holmes said that eliminating the impossible leaves only the possible. Process of elimination by @Trista18