The giant African snail can reach a length of 33 centimetres (13 inches). It uses its tongue to scrape off bits of leaves to eat.
Green mops
Green mops Scientists in France are studying the genetic
properties that allow lichens to tolerate high levels of heavy
metals. Scientists hope that understanding this genetic mechanism
will enable them to genetically engineer plants which can clean up
heavy metal pollution. 21 NOVEMBER 1998, P. 27
Cool Articles
