Tetonic is the study of
Earthquakes
Earth's crust
Sand
None of these
Soil formed by transportation of disintegrated parent material from one place to another is called
Who defined ecology as the study of the relations of all organisms to all its environments
Energy contents of macrophytes may be estimated by
$A$ : Different ecotypes of a species despite being genotypically different are interfertile.
$R$ : They are locally natural selections from a pool of genetic variations found in gene pool of a species.
Soil porosity is maximum in