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webinar presentation
webinar presentation

... Self replacing merino flock ...
Parasitic Worms
Parasitic Worms

... Gets into intestines, blood stream to other parts of the body causing swelling in muscles and bleeding under the skin Causes diarrhea, nausea, vomiting, fever, headache, muscle pain ...
Unit 6 Introduction to Soil Science In
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1887–1893 Sir Arthur Conan Doyle wrote about scientific ideas and
1887–1893 Sir Arthur Conan Doyle wrote about scientific ideas and

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Soils of Africa - University of Colorado Boulder
Soils of Africa - University of Colorado Boulder

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bio-carbon - Tola Organics

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Soil Testing-Lesson Plan - Pitt

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The Impact of Growing Cover Crops in Vineyards on Soil Health

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Introducºon to Parasiºc Worms (Helminths)

... •  The  gut  is  a  tube  lined  by  a  single  cell  layer,  with  no   muscles,  but  microvilli.    Its  transit  Cme  is  very  short,   around  3  minutes,  with  the  animals  defecaCng   conCnuously  as  fast  as  is  compa ...
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Earthworm



An earthworm is a tube-shaped, segmented worm found in the phylum Annelida. They are commonly found living in soil, feeding on live and dead organic matter. Its digestive system runs through the length of its body. It conducts respiration through its skin. An earthworm has a double transport system composed of coelomic fluid that moves within the fluid-filled coelom and a simple, closed blood circulatory system. It has a central and a peripheral nervous system. The central nervous system consists of two ganglia above the mouth, one on either side, connected to a nerve cord running back along its length to motor neurons and sensory cells in each segment. Large numbers of chemoreceptors are concentrated near its mouth. Circumferential and longitudinal muscles on the periphery of each segment enable the worm to move. Similar sets of muscles line the gut, and their actions move the digesting food toward the worm's anus.Earthworms are hermaphrodites—each individual carries both male and female sex organs. They lack either an internal skeleton or exoskeleton, but maintain their structure with fluid-filled coelom chambers that function as a hydrostatic skeleton.""Earthworm"" is the common name for the largest members of Oligochaeta (which is either a class or a subclass depending on the author). In classical systems, they were placed in the order Opisthopora, on the basis of the male pores opening posterior to the female pores, though the internal male segments are anterior to the female. Theoretical cladistic studies have placed them, instead, in the suborder Lumbricina of the order Haplotaxida, but this may again soon change. Folk names for the earthworm include ""dew-worm"", ""rainworm"", ""night crawler"", and ""angleworm"" (due to its use as fishing bait).Larger terrestrial earthworms are also called megadriles (or big worms), as opposed to the microdriles (or small worms) in the semiaquatic families Tubificidae, Lumbriculidae, and Enchytraeidae, among others. The megadriles are characterized by having a distinct clitellum (which is more extensive than that of microdriles) and a vascular system with true capillaries.Earthworms are far less abundant in disturbed environments and are typically active only if water is present.
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