The most appropriate definition of a natural resource is that it is a substance/commodity that is

The $Dharoi$ dam is built on which river?

Why were coliform bacteria chosen to indicate the level of pollution in the Ganga?

The $pH$ of a water sample collected from a river was found to be acidic in the range of $3.5-4.5$. On the banks of the river were several factories that were discharging effluents into the river. The effluents of which one of the following factories is the most likely cause for lowering the $pH$ of river water?

$A$ loss of diversity may lead to a loss of ecological stability.

Why should biodegradable and non-biodegradable wastes be discarded in two separate dustbins?