On biodiversity

摘要

From Gareth Griffith, Institute of Biological Environmental and Rural Sciences It is a major oversight that your article on biodiversity mentions micro-organisms only fleetingly (24 April, p 32).rnFurthermore, you report that "our best estimates so far give the number of species between 1.4 and 1.9 million". These numbers ignore David Hawksworth's widely acceptedrnFrom John Morris Your article on biodiversity fails to mention the effects of geology, topography and soils.