How can sewage be used to generate biogas? Explain.</h2></div>

Which one is true?</h2></div>

Which one of the following nitrogen fixing root nodule symbiotic is associated with the trees of Alnus and Casuarinas?&l…

Methanogens growing anaerobically on cellulosic material produce</h2></div>

Which of the following microorganism gives velvety mat-like appearance</h2></div>

Which wood is more suitable for fuel?

<span>Write short notes on ,  (a) Mycorrhiza,   (b) Role of VAM in cr…

The graph given below represents the effect of sewage discharge on some important characteristics of river.<br> Se…