small snail that lives on seaweeds growing on rocky shores in New England. Among the snail’s enemies is the European green crab. As its name suggests‚ the European green crab is not native to North America. It traveled from Europe early in the 19th century. Before 1900‚ the green crab did not occur north of Cape Cod‚ Massachusetts. After the turn of the century‚ however‚ the crab expanded its range northward‚ and is now found as far north as Nova Scotia. The crab’s range expansion introduced periwinkle
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In this case‚ Ron Birch‚ product manager for the new pasteurized king crab of Phillips Foods‚ needs to make a decision for the phase II of launch of king crab. He planned to continue the magazine strategy used in phase I‚ but Cherry Stockworth‚ vice-president of marketing of Phillips Foods‚ recommended him to use the budget to support half of cost of International Boston Seafood Show. According to the information given in this case‚ I don’t think this is an either-or choice‚ and my recommendation
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Humans VS Pagurus Berhardus What is a vacancy chain and how does it relate to people and animals? Hermit Crabs‚ several species of octopuses and cichlid fish live in and defend empty shells. Limpets hunker down in rocks‚ Maine and southern Lobsters occupy small caves in coral and rocks. The red-cocked woodpecker carves nest hollows out of the trunks of pine trees. As many of these animals grow larger and older they seek better suited shelters‚ creating vacancies for other animals. People do exactly
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presented here. This particular production possibilities curve illustrates the alternative combinations of two goods--crab puffs and storage sheds--that can be produced by the economy. The Set Up According to the assumptions of production possibilities analysis‚ the economy is using all resources with given technology to efficiently produce two goods--crab puffs and storage sheds. Crab puffs are delicious cocktail appetizers which have the obvious use of being eaten by hungry people‚ usually at parties
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Introduction Ecosystem is similar to a community. It consists of species‚ living organisms and the abiotic factors‚ their habitat. Living organisms includes animals‚ plants‚ insects‚ micro-organisms. For their habitat‚ they are the non-living nature which are soil‚ sunlight‚ water‚ precipitation. There are two types of ecosystem. Terrestrial ecosystem which is on the land and aquatic ecosystem which is under the water. Over-breeding is the increase of offspring of a species to a excessive number
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2(intertidal zone) | Quadrat 3(splash zone) | Periwinkles | 0 | 16 | 0 | Barnacles | 0 | 19 | 0 | Bivalves | 0 | 10 | 0 | Hermit crabs | 15 | 0 | 0 | Snail | 1 | 0 | 0 | Animals found outside the quadrats: Animal names | Nos. | Micro-habitat | periwinkles | 42 | Rocky shores | oyster | 20 | Rocky shores | sea cucumber | 51 | Gravel beds offshore | crab | 2 | Gravel beds offshore | Shrimp | 1 | Gravel beds offshore | Sea urchin | 4 | Shallow water | Adaptation features of animals:
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move with a synchronous motion (like a caterpillar). There is also a deep oral groove containing inconspicuous compound oral cilia (as found in other peniculids) used to draw food inside. They generally feed on bacteria and other small cells. Osmoregulation is carried out by a pair of contractile vacuoles‚ which actively expel water from the cell absorbed by osmosis from their surroundings. Paramecia are widespread in freshwater environments‚ and are especially common in scums. Recently‚ some new
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WebQuest Crab Crisis Retrieved from: http://www.aacps.org/aacps/boe/INSTR/CURR/comed/es/webquest/CrabCrisis/indexcrabcrisis.htm Description of the lesson plan This is a 5th grade science lesson plan about Maryland’s Chesapeake Bay. Students will explore the crab crisis and the shortage on the blue crab. An extensive lesson plan will cover topics discovering how organisms interact with each other and how environmental factors contribute to changes to the ecosystem. GEM’s evaluation of the lesson
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the Monkey and the Crab) Once upon a time a crab and a monkey were walking together. As they were going on their way‚ the crab found a rice ball and the monkey found a persimmon seed. The monkey wanted the rice ball‚ so he proposed a trade. The crab knew it was an unfair trade‚ but was finally persuaded by the monkey to trade the rice ball for the persimmon seed. They exchanged the two items‚ but immediately after receiving the rice ball‚ monkey gobbled it up. The crab took the inedible
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Introduction Crabs are decapod crustaceans of the infraorderBrachyura‚ which typically have a very short projecting "tail" (abdomen)‚ usually entirely hidden under the thorax. They live in all the world ’s oceans‚ in fresh water‚ and on land‚ are generally covered with a thick exoskeleton and have a single pair of claws. Many other animals with similar names – such as hermit crabs‚ king crabs‚ porcelain crabs‚ horseshoe crabs and crab lice – are not true crabs. About 850 species of crab are freshwater
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