Grasslands atomic number 18 characterized as lands rule by grasses rather than macroscopical shrubs or trees. In the Miocene and Pliocene Epochs, which spanned a period of about 25 million years, mountains rose in western North the States and created a continental climate good to grasslands. Ancient forests declined and grasslands became widespread. next the scratch Ages, grasslands expanded in icon as hotter and air-dried climates prevailed worldwide. in that location are two primary(prenominal) divisions of grasslands: (1) tropical grasslands, c every(prenominal)ed savannas, and (2) temperate grasslands. Savanna is grassland with fragmented individual trees. Savannas of one species or another control al about half the advance of Africa (about five million immobile miles, generally central Africa) and bouffant areas of Australia, South America, and India. Climate is the near important factor in creating a savanna. Savannas are always found in stiff or hot climates where the annually rainfall is from about 50.8 to 127 cm (20-50 inches) per year. It is crucial that the rainfall is surd in six or eight months of the year, followed by a long period of drought when fires can occur. If the rain were well distributed throughout the year, many much(prenominal) areas would become tropical forest.

Animals hold giraffes, zebras, buffaloes, kangaroos, mice, moles, gophers, ground squirrels, snakes, worms, termites, beetles, lions, leopards, hyenas, and elephants but they all do not thwart in the same Savanna. in that respect are also nearly environmental concerns regarding savannas such as poaching, overgrazing, and clearing of the land for crops. Temperate grasslands are characterized as having grasses as the dominant vegetation. Trees and large shrubs are absent. Temperatures go more from summer to winter, and the amount of rainfall is less in temperate grasslands than in savannas. The major(ip) manifestations are the veldts of South Africa, the pampas of genus genus Argentina and Uruguay, the steppes of the... If you want to get a full essay, order it on our website:
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