$A$ community that is in equilibrium with the environment is called $..............$.

The most important determinant of a marine ecosystem is:

Given below is a list of autotrophs and heterotrophs. With your knowledge about food chain,establish various linkages between the organisms on the principle of 'eating and being eaten'. What is this inter-linkage established known as?
Algae,hydrilla,grasshopper,rat,squirrel,crow,maize plant,deer,rabbit,lizard,wolf,snake,peacock,phytoplankton,crustaceans,whale,tiger,lion,sparrow,duck,crane,cockroach,spider,toad,fish,leopard,elephant,goat,nymphae,spirogyra.

Which of the following levels is conceptual in terms of size?

If the plant producers die in an ecosystem,then the system is

The possible beneficial effect of grazing animals is the