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The upper portion of the forewings are a mottled dark gray, with a distinctive white spot near the dorsal tip, or apex, of the wing, while the lower portion of the forewings is a light gray to brown color fig. This page contains listing of free biology books online textbooks and tutorials they are downnloadable or for viewing online in the html pdf zip chm or rar file. This soil biology volume describes the various facets of earthworms, such as their role in soil improvement, soil structure, and the biocontrol of soilborne plant fungal diseases. Biology and ecology of earthworms is established as a key valuable text for students of agriculture, soil science, and soil invertebrate zoology and ecology. Reynolds school of biological sciences university of east anglia. Free biology books download ebooks online textbooks. It normally overwinters successfully in the united states only in southern florida and southern texas. Damage is most severe during hot, dry weather in midsummer. Finding the worm by mark goldblatt overdrive rakuten. Fall armyworm adults moths have a wing span of about 1.
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