Answer:
(c)Stellar's sea cow (from Russia)
is a recently extinct animal.
Parthenium (carrot grass) is an exotic
weed, which grows rapidly and adversely affects the native species.
African catfish is also an alien
species which adversely affects the growth of indigenous Clariasbatrachus - our
local species.
Lantana camara, another alien
species, is also strongly competing with native species.
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