Which of the following is a biofertilizer?</h2></div>

Which of the following is used as a green manure?</h2></div>

<i>Rhizobium</i> bacteria are important because they help in carbon fixation.</h2></div>

Rhizobium is a free-living bacterium that fixes atmospheric nitrogen.

Azolla is useful as green manure for</h2></div>

State the requirements of Chemiosmosis.</h2></div>

<i>Penicillium camemberti</i> is associated with</h2></div>

Why is there a need to switch to organic farming?