Plant communities ay be classified as follows: A plant association is a cOmmunity of definite floristic corn)Sition it may be characterized by a single dominant species;, on the other hand, it may be characterized by a number of ~ominent species, one of which is abundant here, another there, hilst elsewhere two or more species may share dominance.
_ .?, Niliols +?'?khu r i Ay?, N ?0° n 9 L j Khailar Scale, r :25,000,000 English Miles o iao 0 ' N,kgt hydrographical network is very imperfectly known, especially in the uninhabited hilly tracts.'
A 2 y2 a2 /32_ a2 y2 a2 -, 9_a2 72 - a2 a 1 3 y = a fl - a y - a - y - a I 1111 0 0 (0 - a)(7 - a)I i ay 1 a I = (a - 7)(7 - a)I 130771-al = (a - a) (7 a)(0-7).
By similarly transforming the binary n ic form ay we find Ao = (aI A 1 +a2 A2) n = aAn A l = (alAi - I -a 2 A 2) n1 (a1ï¿½1 +a2m2) = aa a ï¿½ - A i n-1 A2, n-k k n-k k n-k k A = (al l+a2A2) (alï¿½1+a2ï¿½2) = a A ï¿½ =A 1 A2, so that the umbrae A1, A 2 are a A, a ï¿½ respectively.