One winter rye plant can grow over 600 kilometers (372 miles) of roots in one growing season.
To the rescue
To the rescue Lava flows from eruptions of the Galapagos volcano
Cerro Azul are threatening a population of endangered giant
tortoises on the island. Conservationists are using a helicopter to
pick up tortoises from threatened areas and are moving them to a
captive breeding facility. 10 OCTOBER 1998, P. 13
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