Biomass produced by plants in oceans accounts for
$55\%$
$65\%$
$75\%$
$85\%$
It’s obvious.
Amount of inorganic substances present in an ecosystem is ______. Energy flow is a ______ feature of ecosystem.
Why are nutrient cycles in nature called biogeochemical cycles ?
Ecosystem may be defined as
Sedimentary cycle having a small gaseous component also is found in
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