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Broad-based economic growth from improvements in agriculture and food can contribute significantly to these and other important development priorities . This illustrates fairly well how evolutionary thinking can contribute not only to the understanding of the intimate association between hosts and parasites , but also to the decision taking process on the appropriate societal responses to the infectious disease threats . The refinement of communication skills and concepts as well as the development of standards of ethical and thoughtful communication can contribute significantly to the building of a more mutually responsible community and a more civil and humane world . Such a program can contribute greatly to an appreciation of man 's rights and duties , as well as to his correct exercise of freedoms and authority in intergroup relationships .