Complex sentence: Though it is sometimes found in soil, this is not a natural habitat for "T. lanuginosus", and the concentration of spores of thermophilic fungi per gram material is approximately 10 6 higher in composts than soils.
Split into simpler sentences: Though it is sometimes found there, soil is not a natural habitat for "T. lanuginosus". The concentration of spores of thermophilic fungi per gram material is approximately 10 6 higher in composts than soils.