What is climax community? 

.................... is the climax community of hydrosere.

What is meant by community?

Accumulation of humus damage the minerals in the soil. (b) Forest stage is the climax community of Hydrosere. (c) Lithosere is a type of xerosere. (d) Secretion of acids by lichens enhance the weathering of rock.

Assertion: Secondary succession always involves a predictable sequence of species and ends up with the same climax community as existed prior to the disturbance. Reason: A pond cannot be considered as a self sustained ecosystem as it does not possess all the structural and functional components which work as a unit in an ecosystem.

What is a communication system?

The climax community of every succession is not isolated with one or two species of organisms.' Justify.

What is ecosystem/community diversity?

Pick out the correct option from (a) to (e).I. Primary succession begins in areas where natural communities have been destroyed.II. Hydrarch succession takes place in water.III. The climax communityis the community that is in near equilibrium with the immediate environment.IV. Newly cooled lava secondary succession.

(b) What is Visual Communication Device? Give examples.