Pioneer community established on a bare rock is
Mosses
Lichens
Phytoplanktons
Higher plants
Pioneer community established on bare rock is Lichens $i.e.$ first colonisers $e.g$. Graphis, Rhizocarpon.
In a food chain, the total amount of living material is depicted by
Local water cycle involves
The exchange pool in the carbon cycle is
Both hydrarch and xerarch successions lead to
Maximum productivity is found in
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