keystone species sentence - keystone species sentence in Hindi (11-20)

	11.	"Limacina helicina " is a keystone species of mesozooplankton in Arctic pelagic ecosystems.
	12.	The black-footed ferret is entirely dependent on another keystone species, the prairie dog.
	13.	The beaver is the keystone species to an aquatic system.
	14.	The apple snail is a keystone species in Pantanal's ecosystem.
	15.	Due to these influences, some ecologists have considered the passenger pigeon a keystone species.
	16.	They are considered to be keystone species due to their impact on their environments.
	17.	"Pleuragramma antarcticum " is a keystone species in the ecosystem of the Southern Ocean.
	18.	This is especially common with extinction of keystone species.
	19.	"Ficus citrifolia " is considered a tropical keystone species.
	20.	"The lion is a keystone species, " he says.

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keystone species in a sentence