The <span class="katex"><span class="katex-html" aria-hidden="true"><span c…

Which of the following is not correct regarding the primary treatment of waste-water?

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

Those animals or plants or microbes which destroy crops and their products are known as?</h2></div>

<span>How is </span><i>Azolla </i><span>helpful as biofertilizer?</sp…

One of the following, aquatic weed has been exploited for biogas production</h2></div>

Farmers have reported 50% higher yield of rice by using which bio-fertilizer?</h2></div>

Select the correct statement from the following.</h2></div>