One winter rye plant can grow over 600 kilometers (372 miles) of roots in one growing season.
Life on the edge
Life on the edge A number of scientists are conducting research in
the Australian rainforest to try and determine the role of ecology
in the evolution and biological diversity of rainforests. These
scientists believe that ecological change, rather than the
geographical separation of populations, might be responsible for
the development of new species. The scientists' theory is that
ecological change causes organisms to adapt to new conditions. This
ultimately leads to evolutionary change. Further research based on
this theory is planned, with particular emphasis on examining the
edges of rainforests where they meet the savannah. 20 NOVEMBER 1999, P. 46-49
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