What is the best solution for the treatment of electronic wastes?

What are e-wastes? Name any two e-wastes . What is best solution for treatment of e-wastes?

What is the best time for removal of weeds from the field ?

Why is aerobic degradation more important than anaerobic degradation for the treatment of large volumes of waste water in organic matter. Discuss.

What is the role of microbes in sewage treatment?

What is best pH of soil for cultivation?

What is the maximum number of electrons present in an electronic shell ?

Name some organic wastes.

What is meant by electronic wastes (e-wastes)?