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പരിസ്ഥിതി മലിനീകരണം സംബന്ധിച്ച ജൈവസൂചികയായി ഉപയോഗിക്കുന്ന സസ്യം:

Aഡയാറ്റം

Bലൈക്കൻസ്

Cആൽഗ

Dക്ലോറല്ല

Answer:

B. ലൈക്കൻസ്


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