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Erosion – The movement of soil by wind or water to some new location
Erosion – The movement of soil by wind or water to some new location

... Erosion – The movement of soil by _________ or _________ to some new location. (naturally a slow process but speeds up quickly when it is exposed) - billions of tons of exposed topsoil are lost each year to erosion History - the invention of the _________ greatly increased the amount of erosion by ...
Interpreting your Soil Test Report
Interpreting your Soil Test Report

... Soil test values of Phosphorus, Potassium, Calcium, Magnesium, Iron, Manganese, Copper, Zinc, Boron, Aluminium, and Sulphur, reported in mg/L. These values tell you what are currently in your soil. Soil test ratings range from L- to E. This tells you the level of fertility for the specific crop. It ...
Soils rich in
Soils rich in

... • The layer below the topsoil is called Bhorizon or the middle layer. • The middle layer is less porous than the topsoil, and is, therefore, harder. • It contains more minerals as compared to the topsoil, but less quantity of humus. ...
Flatworms Quiz Answers
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Lecture notes: ch 33 Invertebrates a.p._chapter_33_notes
Lecture notes: ch 33 Invertebrates a.p._chapter_33_notes

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Soil Resources - WordPress.com

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soils webquest - cloudfront.net
soils webquest - cloudfront.net

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Level 3 - biological activity in soils

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PowerPoint Presentation - nvertebrates

... Have round, tube-like bodies Most are too _______ to be seen with the naked eye Live in _____ types of environments. Have ____________ system with two openings. Muscles run _______________. Have a _________ _________ with a brain and simple sense organs. – Reproduce ____________. – Many _________ th ...
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... a) Atrium  ventricle  gill capillaries  atrium  ventricle muscle capillaries b) ventricle  atrium  gill capillaries  ventricle atrium  muscle capillaries c) Atrium  ventricle  gill capillaries  muscle capillaries d) Atrium  ventricle  gill and skin capillaries  atrium  ventricle mu ...
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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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