Explain how pesticides enter into water and air.

Most probable number method of microbiological study.

How is urbanisation affecting the meteorological parameters in general? Explain taking three parameters into consideration

Soil taxonomy

What are the components of photochemical smog? How is it formed in the atmosphere?

What are various sources which generate carbon dioxide in the atmosphere? Mention the sink for this gas and describe its fate in the atmosphere.

Polypedon