Ecotone is

Options

A. a polluted area
B. the botton of a lake
C. a zone of transition between two communities
D. a zone of developing community.

Answer

C

Explanation

The adjacent biotic communities do not always have sharp lines of demarcation between them. There are usually transition zones, the ecotones, between them an ecotone often has some populations from each adjacent community and some characteristic of itself. The total number of species in ecotone is generally greater than in the adjoining communitites, a phenomenon called edge effect.