15. The Steppe
    The Steppe biome is a dry, cold, grassland that is found in all of the continents except Australia and Antarctica. It is mostly found in the USA, Mongolia...
    http: //blueplanetbiomes.org/steppe.htm
    
    
16. The grassland biome
    Grasslands are characterized as lands dominated by grasses rather than large shrubs or trees. In the Miocene and Pliocene Epochs, which spanned a period of about 25 million years, mountains rose in western North America and created a continental climate favorable to grasslands
    http: //ucmp.berkeley.edu/exhibits/biomes/grass...
    
    
17. Tropical Savannas
    Tropical Savannas are a grassland biome, dotted with trees, generally located at tropical latitudes
    http: //academickids.com/encyclopedia/index.php/Tro...
    
    
18. Welcome to the National Grasslands!
    These wind-swept seas of grass and wildflowers - four million acres in all - have witnessed the pageant of the frontier, the Dust Bowl, and the dramatic recovery into a great national treasure
    http: //fs.fed.us/grasslands/
    
    

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