How to present a grassland biome?
Since this is not my area of expertise, I searched Google under the key words "grassland biome" to get these possible sources:
http://www.blueplanetbiomes.org/grasslands.htm
http://www.ucmp.berkeley.edu/exhibits/biomes/grasslands.php
http://www.worldbiomes.com/biomes_grassland.htm
There are many more.
In the future, you can find the information you desire more quickly, if you use appropriate key words to do your own search. Also see http://hanlib.sou.edu/searchtools/.