the answer is given below

body preview (287 words)

xx the xxxxx xx xxxx xxx xxxxx the unusual species xx ungulates, two different xxxxxxx xxx xxxxxx xx one area you xxxx a species xxxx xx xxxxxx xxxx rough grasses, xxx has xxxxxxx xxxxxxxxxxxxxxx xx process the grass while xx xxx other xxxxx you find x xxxxxxx species xxxx lacks xxx xxxxxxx xxxxxxxxxxxxxxx xxx feeds xxxxxx on xxxxx flowering xxxxxxx According to xxx xxxxxxxxxxx xxx xxxx a xxxxx xxxxxxxxxx had occurred xx xxx past xxxxxxx a rock fall that xxx xxx one small part xx xxx valley from xxx rest. When xxxx happened the species was xxxxxxxxx from xxxx other xx the valley and xxxxxx xxxxx not xxxxxxxx xx xxxxx The xxxxxxx xxxxx xxx xx xxxxx xxxx to its own xxxxxxxxxxx in xxxxx to survive. The two xxxxx xx the valley had xxxxxxxxx conditions xxx hence xxxxxxx on each xxxx xxx to adapt xxxxxxxxxxxx As time xxx xxxxx passed xx some of xxx xxxxxxx from each side died xxxxxxx xxxxx that had acquired xxx necessary adaptations to survive the environment, x process known as xxxxxxx

- - - more text follows - - -