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User: andrewt

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  1. Re:The strength of Balsa on 11-Pound Model Plane Vs. The Atlantic · · Score: 1

    > The terms hard and soft wood are biological > classifications, not an actual discription > of the wood. Yes and no. Some consider hardwood to be that from deciduous trees and softwood that from conifers. These might be semi-useful definitions in Europe or North America but most of the world's tree species are in neither category. Andrew Taylor

  2. Re:Something I missed? on Ozone Hole Will Heal, Say British Scientists · · Score: 1
    These questions and others are answered in Robert Parsons' Ozone Depletion FAQ

    Andrew Taylor