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  3. Trees Trees are the oldest living organisms on earth. / The great age of trees makes them useful for all sorts of scientific

Trees Trees are the oldest living organisms on earth. / The great age of trees makes them useful for all sorts of scientific

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答案 Trees Trees are the oldest living organisms on earth. / The great age of trees makes them useful for all sorts of scientific research. / Besides, trees also have a lot to teach us about being part of a community / and how cooperation is better for a society than competition. / A community of trees growing together / share all of the available resources with each other. / They do this through their roots, through the soil, / and also through the networks of tiny fungi growing in the soil between them. / They don’t only share with trees of the same species. / Any type of tree can benefit. /
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