Biology, 24.04.2020 19:30 Arellano4672
Dutch elm disease spread more rapidly in the United States than in Europe because of the 1. practice of planting elms in monoculture 2. plentiful breeding sites for beetle vectors due to elm phloem necrosis 3. narrow genetic base of susceptible American elm trees 4. none of the others 5. all of the others
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Dutch elm disease spread more rapidly in the United States than in Europe because of the 1. practice...
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