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Describe the classification oftrees on the basis of their spread. |
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Answer» Study of plant diseases in relation to their occurrence (INTERACTION of populations of plants, pathogens and environment) is known as EPIDEMIOLOGY. There may be infectious disease and contagious disease. A disease which spreads SLOWLY and is incited by a transmissible pathogen is referred as infectious disease, and that which spreads RAPIDLY is a contagious disease. |
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