REVIEW OF RELATED LITERATURE AND STUDIES Humans have been using insecticides for thousands of years. The Egyptians used unspecified chemicals to combat fleas in their homes about 3‚ 500 years ago‚ and arsenic has been used as an insecticide in china for at least 2‚ 900 years. Insecticide is a substance that kills insects. Insecticides are sometimes called pesticides. But pesticides include substances used to control mice‚ weeds and other pests besides insects. Insects harm human by transmitting
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Gross Anatomy of a Frog aldreyarellano I. AXIAL REGION A. Head – most anterior‚ triangular part w/c is flattened dorso-ventrally 1. Snout – blunt apex of the head 2. Mouth – large anterior opening w/c extends postero-laterally up to the head’s base > dorsal & ventral lip folds – immovable folds that border the mouth dorsally & ventrally – provided w/ valves w/c are associated to respiratory movements – provided w/ valves w/c are associated to respiratory movements 3. External nares or
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1 )http://www.mbgnet.net/salt/animals/echinod.htm How Do Sea Stars Move? Each sea star had hundreds of tiny feet on the bottom of each ray. These are tube feet‚ or podia. These tiny feet can be filled with sea water. The vascular system of the sea star is also filled with sea water. By moving water from the vascular system into the tiny feet‚ the sea star can make a foot move by expanding it. This is how sea stars move around. Muscles within the feet are used to retract them. Each ray of a
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There are no multicellular plants in the oceans Most are photosynthetic single cells Cambrian is in Paleozoic era Called Cambrian explosion‚ because in this 70 million years. We have an explosion of every multicellular organism. Wednesday October 31st‚ 2012 CAMBRIAN Phanerozoic Eon Eras: Paleozoic (most recent : 550 Ma until now) – multicellular organisms in the oceans The periods in the Paleozoic era are: Cambrian Ordovician: end is one of the 5 mass extinctions. So many organisms
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The Venus Fly Trap The Venus Fly Trap‚ Dionaea muscipula‚ is a carnivorous plant native to the bogs and swamplands of North and South Carolina(Halpern 2). It preys on insects with its uniquely shaped terminal portion of its leaves. Each leaf has two primary regions: the leaf-base and the trapping mechanism(Souza 3). The flat typical leaf-like region is called the leaf-base and it is capable of carrying out photosynthesis and grows out of the ground. The trapping mechanism‚ called the leaf-blade
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Armadillidiidae is a family of woodlice‚ a terrestrial crustacean group in the order Isopoda. Unlike members of other woodlouse families‚ members of this family can roll into a ball‚ ability they share with the outwardly similar but unrelated pill millipedes and other animals. It is this ability which gives woodlice in this family their common name of pill bugs‚[1] doodle bugs‚ or roly polies. The best-known species in the family is Armadillidium vulgare‚ the common pill bug. The Classification
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ANATOMY Anatomy‚ Physiology‚ & Pathophysiology Roots‚ Prefixes‚ and Suffixes 1. a- without or absence of: (asepsis‚ avascular tissue) 2. ab- away from: (abduction) 3. acro- top or end: (acromion process) 4. ad- to or towards: (adduction‚ adductor muscle) 5. aesth – feeling: anesthesia) 6. –algia pain: (neuralgia) 7. ambi- both: (ambidexterous) 8. amubl- walk: (ambulatory) 9. an- without: (anaerobic respiration) 10. ante- before‚ in front of: (antecerebellar)
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As humans step off their home planet into the surrounding solar system and beyond‚ they do not go alone. Machines have preceded them. And as people go into space‚ machines will go along. Of all the machines we have used and imagined‚ none have captured our interest and feelings so strongly as the class of machines called robots. The International Space Station’s new Canadarm2 robotic arm grasps a Spacelab pallet while Canadian mission specialist Chris A. Hadfield helps maneuver it into loading position
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Butterfly Eggs on a Leaf Butterfly Caterpillar . Caterpillar Becoming a Chrysalis Butterfly Emerging from a Chrysalis egdbdcgggggggggggggggggggggggggggggrwwwwwwwwwwwwwwwwwwwwwwww- wwwwwwwwwwwwwwwwbbbbbbbbbbbbbbbbbbbbmmmmmmmmmmmmmmmmmmmmmmmm- mmmmmiiiooooooooooooooooooooooooooooooofyxyaedAFSDHDFNJTRYSR- GTRUJTDUJZDHTDIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII- IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIII- IIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIIW-
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Body Systems of Various Organisms All organisms in the world have a range of systems and organs in their body. Some organisms may share similar body systems while others have absolutely nothing in common. Several of those organisms include humans‚ pigs‚ crayfish‚ and earthworms. From their mushy‚ gushy organs to their soft‚ gentle skin‚ you may think‚ “How are humans and pigs possibly alike? Or a crayfish and an earthworm?” In many ways they may not be‚ but in other ways‚ they are very much alike
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