The National Geographic Magazine, Volume 190National Geographic Society., 1996 - Geography |
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Gene Xa21 helps rice plants resist a bacterial disease called leaf blight . The team engineered new varieties of rice containing the gene and showed that the new plants and their descendants also ward off the disease , which can wipe ...
Gene Xa21 helps rice plants resist a bacterial disease called leaf blight . The team engineered new varieties of rice containing the gene and showed that the new plants and their descendants also ward off the disease , which can wipe ...
Page 126
More important , many plants have a hard time getting through the cycle of life , death , and rebirth without fire . Many pinecones , for instance , require temperatures of 120 degrees or higher - most likely created only by nearby ...
More important , many plants have a hard time getting through the cycle of life , death , and rebirth without fire . Many pinecones , for instance , require temperatures of 120 degrees or higher - most likely created only by nearby ...
Page 137
Saw grass , which dominates the Everglades , sprouts from the base of the plant , where it is protected by the damp soil ... In the Southwest millions of acres once in grass are now dominated by plants like mesquite and creosote .
Saw grass , which dominates the Everglades , sprouts from the base of the plant , where it is protected by the damp soil ... In the Southwest millions of acres once in grass are now dominated by plants like mesquite and creosote .
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