The earthworms in the mountains of southeastern Australia release their own slime (called mucus) into the soil, live for 20 years, and move about underneath snow at soil temperatures of 0(C or 32(F, all winter long.
Relative values
Relative values Researchers have found that by crossing commercial
varieties of rice with related wild varieties, crop yields can be
significantly increased. An increase in resistance to a virus which
destroys rice crops in Latin America has also been found in these
hybrid rice plants. 27 NOVEMBER 1999, P. 13
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