Page 19 - Science Course 3 (Book 1)
P. 19

Mo1-L2a: What are Land Biomes?




               Earth has seven major biomes: desert, grassland, tropical rain forest, temperate rain forest, temperate
               deciduous forest, taiga, and tundra.



































               Desert Biomes
                                                                                    U.S. Desert
               Deserts are biomes that receive very little rain.        38                              65
               They are on every continent and are Earth’s driest
               ecosystems.                                              32                              60
                                                                        27                              55
                                                                        21                              50
                                                                        16                              45
                                                                        10                              40
                                                                    Temperature ( o C)  –1              30    Precipitation(cm)
                                                                                                        35
                                                                         5

                                                                        –6
                                                                                                        25
                                                                       –12
                                                                                                        15
                                                                       –18                              20
                                                                       –23                              10

               Rainwater in deserts drains away quickly because of     –29                              5
               thin, porous soil.                                      –34                              0
                                                                            J   F  M  A  M J  J   A   S O  N  D
               Lizards, bats, woodpeckers, and snakes are among
               animals found in deserts.                                              Month

               Shallow roots of desert plant life absorb water
               quickly.

               Humans have an impact on deserts by using
               valuable water.





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