Monstrous problem

10th May 1996 at 01:00
A house dust mite magnified 135 times by an electron microscope. 'Mites feed on shed human skin scales that make up house dust. There are probably about 10,000 of these small animals in your mattress, even if it's clean. Some people are allergic to them. For such people, the mites cause asthma when they are breathed in.'

From the Biology pupils' book, by David Brodie, in Longman Co-ordinated Science, a new series edited by Terry Parkin. This post-Dearing 14-16 course sets out to combine a traditional approach with some innovative features. The series comprises pupils' biology, chemistry and physics books, three separate copymaster packs and a Teachers' and Technicians' Guide. To be reviewed.

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