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Life in sea of grass

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On television we have repeatedly seen images of African savannah: infinite groups of mammals through pastures in search of food, in constant migration. Similar were the steppes of yesteryear, the grasslands that develop in colder climates, in which some of the most abundant mammals in the world were concentrated: bison, mongolian gazelles, wild horses, etc. Today we have eliminated most of the steppes of the world, but still in remote places you can appreciate the richness of these ecosystems. Let's see what they are and how they work. 400