the nervous system in blue deutocerebrum‚ and tritocerebrum. Immediately behind the brain is the subesophageal ganglion‚ which is composed of three pairs of fused ganglia. It controls the mouthparts‚ the salivary glands and certain muscles. Many arthropods have well-developed sensory organs‚ including compound eyes for vision and antennae for olfaction and pheromone sensation. The sensory information from these organs is processed by the brain. In insects‚ many neurons have cell bodies that are positioned
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An insect repellent is a substance applied to skin‚ clothing‚ or other surfaces which discourages insects (and arthropods in general) from landing or climbing on that surface. There are also insect repellent products available based on sound production‚ particularly ultrasound (inaudibly high frequency sounds). These electronic devices have been shown to have no effect as a mosquito repellent by studies done by the EPA and many universities.[1] Insect repellents help prevent and control the outbreak
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BASIC CHEMISTRY 1. What is the difference between being ionized and being polar? When ionized the atom will either lose or gain electrons. A polarized molecule has an overall neutral charge with positive and negative sides such as H2O. 2. Compare macromolecules to Monomers; complete the chart below Example of a Macromolecule | Corresponding Monomer | polysaccharide | monosaccharide | lipids | glycerol‚ fatty acid | protein | Amino acids | nucleic acid | necleotides
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beneficial and detrimental aspects of insects (to man) Definition of “pest” – difference between key‚ secondary‚ and sporadic pests General characteristics of Phylum Arthropoda Characteristics of Class Insecta Phylogeny and Systematics of the Arthropods Major distinguishing characteristics of members of Phylum Arthropoda Major distinguishing characteristics of Class Insecta Classification of Biological Organisms Difference(s) between conventional taxonomy and systematics Concept of
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supported by the fact that wings are originated from a structural feature that already had the necessary muscles‚ tendons and appendages of insects. This was later proven by the dismissal of Manton’s theory that insect’s legs are different than other arthropods legs (Whitfield 326). I believe that the exite-endite theory seems the
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Table of Content Abstract ……………………………… 2 Introduction …………………………...3 What is Ecosystem Management...........3 Resources/Development………………3 Ecology /Soil as an Ecosystem………...3 Land Management……………………..4 Nutrient Cycle………………………….4 Soil Biology…………………………....5 Conclusion……………………………..6 Work Cited……………………………..7 Abstract One reason people think of different things when they hear ecosystem management is because people mean
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Fossils of the Paleozoic Era The Earth is thought to be approximately 4.6 billion years old. For years researchers have turned to fossil remains to learn more about the earth and the organisms that have resided here. The history of the earth has been divided in to a widely accepted tine scale in order to make the study of the earths history more organized and understandable. The geologic time scale is used by all kinds of scientist‚ including geologist‚ anthropologist‚ and paleontologist as
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FIVE KINGDOM CLASSIFICATION Biological System of Classification • Organisms are first divided into a few kingdoms • Phylum or division is made up of several classes • Classes are made up of orders • Within each order there is a family • Each family consists of a varying number of genus • A genus usually has several species. Organisms within the species can breed PROCARYOTAE KINGDOM Prokaryote • Also called as bacteria‚ these as believed to be the most abundant
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THE EFFECT OF PEST INFESTATION IN THE HOSPITALITY INDUSTRY ASSESSMENT OF THE EFFECTS IF PEST INFESTATION IN THE HOSPITALITY INDUSTRY There are so many ways that pest infestation can have negative impact in the hospitality establishment which ranges from profit losses to lower employee morale‚ legal actions in form of fines‚ sanctions‚ closure of the hospitality premises‚ health risk etc. pest infestation not only destroy the hospitality reputation but can also cause physical damage to the
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Fever: is an infectious disease‚ which it is caused by tiny pathogenic (harmful) organisms that can be contagious by spreading among people upon contact with an infected person. (Tirtha Chakraborty‚ 2008) “Dengue is the most common and widespread arthropod-borne viral infection in the world.” (World Health Organization‚ 2008) The mosquito Aedes aegypti‚ who feed during the day are the transmitters of the virus. They are found in the tropic areas and Africa. The disease is caused by four closeley
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