. Tubifex in water indicates its
(a) toxic metals.
(b) purity.
(c) organic loading.
(d) high salt contents
Best Answer
(c) organic loading.
Tubifex also called the sludge worm or sewage worm can survive in areas heavily polluted with organic matter that almost no other species can endure. That’s why, the presence of Tubifex in water indicates its organic loading.
Related questions
