Sewage treatment process in which part of decomposer microbes is recycled into the starting process is</h2></di…

Why does milk get sour after a long time?</h2></div>

Which shape of bacteria has been represented in the following diagram?

Rhizobium is a __________</h2></div>

The primary treatment of removal of:</h2></div>

Mention the role of cyanobacteria as a biofertilizer.</h2></div>

Where is the major part of sludge pumped in secondary treatment?

Green manuring enhances crop yield by<br> </h2></div>