Maximum contribution of $O_2$ is from
Phytoplankton
Grasslands
Herbs and shrubs
Dense forests
(a)Because phytoplanktons (primary producers) are largest in number.
Who defined ecology as the study of form, function and factor
In which one of the following pairs is the specific characteristic of a soil not correctly matched
Gloger's rule related to the
E.P. Odum is a leading
Which of the following isolation is important for speciation
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