Q.

A stable community is one which 

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a

shows great variation in year to year productivity.

b

is resistant to alien species invasion.

c

is with low levels of biodiversity and productivity.

d

succumbs to man-made or natural disturbances.

answer is C.

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Detailed Solution

A stable community should not show too much variation in productivity from year to year; it must be either resistant or resilient to occasional disturbances (natural or man-made), and it must also be resistant to invasions by alien species. Increased diversity contributes to higher productivity.

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