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Marisol Chacon

on 7 May 2010

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Transcript of Biomes

Biomes Biomes: n. A major regional or global biotic community, such as a grassland or desert, characterized chiefly by the dominant forms of plant life and the prevailing climate. Types of Biomes Forest Marine Desert Grassland Forest Forest Biomes cover about 1/3 of the earth's surface.
The major attribute of the forest biome is its trees. Trees create most of the world's oxygen Without oxygen all living organisms would die Types of trees in a forest biome include evergreeens, maple, elm, oak, cedar, and other trees that shed leaves in fall The forests canopy is thin enough to allow plants to photosynthesize deforestation garter snakes, turtles, few amphibians average forest animals Marine Biome Dominates large part of earth largest ecosystem algae, sea stars, fish, crabs, snail, crustaceans, clams, whales, dolphins, and other mammals live here Oceans all over the world constant mix of cold and warm ocean currents Grassland Various types of grasses grow here cottonwood and oaks giraffes, zebras, buffaloes, kangaroos, mice, moles, gophers, ground squirrels, snakes, worms, termites, beetles, lions, leopards, hyenas, and elephants. good for crops plain and dry cold winters hot summers average rainfall 20 - 50 inch per year Desert Montana, Utah, and The Great Basin yuccas, ocotillo, turpentine bush, prickly pears, false mesquite, sotol, ephedras, agaves and brittlebush. burrowers and kangaroo rats insects, arachnids, reptiles and birds 1.5 cm of rain in the sahara desert very hot and dry summers
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