BIOLOGY Case study (4 Marks)

Microbes can be used to decrease the use of chemical fertilizers and pesticides. Explain how this can be accomplished.###How biofertilizers increase fertility of soil?

Bacteria cannot be seen with the naked eyes, but these can be seen with the help of a microscope. If you have to carry a sample from your home to your biology laboratory to demonstrate the presence of microbes with the help of a microscope, which sample would you carry and why?

What is sewage? Describe secondary treatment (biological treatment) in Sewage Treatment plant.

Microbes are useful in household products. Explain this with suitable examples

Explain structure and working of biogas plant with diagram.