Why is savana grassland called zoo of the world

The grassland savanna is called the zoological of the world because of its great diversity of living beings.

Explanation:

The grassland savanna is one of the biomes with the greatest biodiversity and also one of the most threatened, which currently presents great degradation and several species at risk of extinction.

In addition to the numerous insects, birds, rodents and reptiles, the savannas have a very diverse fauna with elephant, tapir, anteater, otter, capybara, maned wolf, giraffe, lion, antelope, rhino, wild boar, hare, deer, deer, zebra , among others.

Its diversity in vegetables is also great, constituted in large part by grass, grass and herbs, the trees that appear in the vegetation deserve mention: acacia, baobab, bottle trees, eucalyptus, etc.

it would be  

germany had to pay all damages related to the war.

and i think

germany had to take sole responsibility for the war.

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