Which phylum of invertebrates is responsible for the Great Barrier Reef?
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Coral are in phylum Cnidaria.
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First you need to know what phyla of invertebrates you will include. Then, get at least a picture that represents each one, and start by separating them into large categories using a visible feature. Then separate each of the major groups into smaller ones. \nRepeat this, and write down each step of this process. Then order your notes and add numbers to go from one alternative to the next... voilà the dichotomous key.\n\n\n\nAlternatively, if you want a ready-made one, try these resources:\nhttp://www.msc.ucla.edu/oceanglobe/pdf/Invertebrates/Inverts_Key_Phyla.pdf\nhttp://www.bio.davidson.edu/courses/invertzool/lab/ex1taxonomy.pdf\n\nIf you do it yourself it's more fun :-)
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C: phytoplankton, which feeds the zooplankton and so\n(I know this because I buy both phytoplankton and zooplankton for my reef tank).
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http://ceratium.ietc.wwu.edu/IWS/Images/Biota/Animalia/Mollusca/Bivalvia/Psammobiidae/Nuttallia/obscurata\nit's on this page
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the great barrier reef is the world's largest coral reef and one of australia's most popular tourist attractions. although its name suggests one reef, the great barrier reef is a chain of more than 2500 reefs. it also includes many small islands. the reefs and islands extend in a nearly unbroken chain for abt 2010 kms. along australia's north east coast. the reefs are composed of abt. 400 species of corals of all shapes and colours. the waters around the great barrier reef are warm all year round. the warm waters and the beauty of  the coral formations attract swimmers and skin divers . the great barrier reef area has a number of tourist resorts.
1163503
Covering the reefs would kill them\nthey need lots of fresh water and sunlight
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I am not entirely sure that I understand your question correctly, but let me simply rephrase, and if it is close enough, my answer may help you.\n\nCoral reefs are not simply reducable to the coral polyps themselves; it is a whole ecosystem, and a very productive one, too.  It is also a very sensitive ecosystem that is particularly susceptible to all sorts of environmental influences.  Given the impact of humans on the environment, coral reefs face increased challanges, such as problem with water quality (e.g., chemical pollutants), effects of over fishing (a problem in the Philipines, where many fishes are caught for export in the aquarium trade) etc. etc.  \n\nNow, what makes studying coral reefs so interesting and complex is the great species diversity and the complexity of physical and biological aspects that are the reef system.   It takes an interdisciplinary approach, and that means, studying not only biology, but oceanograhy, chemistry, physics...  the whole scale of natural sciences.  \n\nBut, it is certainly worth the effort, so if you are interested, I'd suggest you try to study biology and focus on reef ecology.  Good luck...
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Eptiles do not use water to flush nitrogenous wastes from the body as urine, like mammals do, but convert them to a form which can be dumped as solid dung.\n\nDiverse lizards of Oz\nNext to birds, lizards are among the most commonly encountered vertebrate animals in the savannas. Indeed, the diversity of lizards in the tropical savannas is particularly rich, exploiting numerous habitats, from woodlands to sandstone escarpments, rainforests and semi-arid zones, many endemic to just small areas.\n\nEvolution of lizards\nThe combination of poor soils and dry climate is believed to have led to the evolution of plants with tough, thick, chemical-laden leaves—and relatively few plant-eaters. Instead, the vegetation is broken down by termites, which thrive in Australia—providing an abundant food source for reptiles. Just as mangroves don’t need salt but have developed strategies for living where no other plants can compete, so too have reptiles exploited an environment largely uninhabitable for other animals.\n\nThe great diversity of reptile species may be due to the long-term stability, and great size, of the Australian continent. Those animals which cope well with conditions have had plenty of time to evolve into different species exploiting different ecological niches. This diversity may even be fostered by shortages. This may favour large numbers of specialist species which have adapted to localised conditions over fewer, more widely distributed, species which might have evolved in a more benign environment.\n\nEfficiency of lizards\nExcepting Antarctica, Australia is the driest continent on earth; 75 per cent of it is arid or semi-arid. The climate is erratic, with long, irregular dry and wet cycles determined by the effects of El Nino and La Nina. Successful animals must cope with unreliable rainfall and prolonged periods of shortages, but take advantage of unpredictable times of plenty. In addition, Australia’s soils are also nutrient-poor, with low productivity, and fires are frequent. Energy-efficiency is thus the key to long-term survival.\n\nMammals and birds generate their own heat from food, using up to 90 per cent of their energy intake for this purpose. However most lizards, instead of consuming food to generate energy, use solar power, basking in sunshine or sleeping in a warm spot to power up their ‘batteries’ for the day’s (or night’s) activities.\n\nSome lizards, such as dragons, are able to raise their ribs and angle their bodies to increase the body surface exposed and can become darker to absorb more heat. This strategy, known as thermoregulating, is not an option for some lizards which live in closed forests. Instead, they thermoregulate passively, or ‘thermoconform’, their body temperature simply conforming to that of the air around them.\n\nLizards are also efficient users of water. Their dry scaly skin reduces moisture loss, those living in the hottest areas tending to have compact bodies to minimise loss and/or restricting most activities to hours of darkness. In addition, reptiles do not use water to flush nitrogenous wastes from the body as urine, like mammals do, but convert them to a form which can be dumped as solid dung.\n\nGetting away from predators\nGeckos, legless lizards and skinks will readily drop their tails when threatened, the wriggling appendage serving as a distraction while the owner makes its getaway. Fracture planes between certain vertebrae at the top of the tail allow it to detach easily when pulled apart by special muscles. This sacrificial offering is easily regrown. Tails of dragons and goannas can also break off, but do not do so as readily and tend not to regrow. All dragons, goannas and Australian geckos lay eggs but some skinks give birth to live young. Experiments with skink eggs suggested that those kept at ‘maternal’ temperatures were larger and fitter than those kept at normal nest temperatures. This may be an important factor in cool, or dry, clima
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the great barrier reef is the natural wonder of Australia.
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Is it the definition for Phylum Mollusca that you are looking for?\n\n Anyway..try this : http://www.answers.com/topic/mollusk
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If you go to the Tree of Life WWW page at the level Arthropod (Phylum), you will see that cockroaches are insects (Class Hexapoda) and lobsters are decapod crustaceans (Class Crustacea); they are two groups in the same phylum, URL:\n \nTree of Life (at Arthropoda level) - http://tolweb.org/tree?group=Arthropoda&contgroup=Bilateria\n \nYou can move up the tree to see how arthropods are related to other animals.\n \nBeyond classification which should reflect the lobster and cockroach evolutionary relationship, the term 'roaches of the sea' reflects the behavior of lobsters as omnivorous scavengers.   Cockroaches will eat almost anything organic and so will lobsters.   They clean up the dead and dying plants and animals in their environment.\n \nSo much for the delicious taste of lobster?
412395
cockroaches have exoskeletons
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Echinoderms:\nAny of a phylum (Echino dermata) of radially symmetrical coelomate marine animals including the starfishes, sea urchins, and related forms.
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Classification\n\n Phylum: Arthropoda\n Class: Insecta\n Order: Lepidoptera\n Family: Nymphalidae\n Genus: Limenitis
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Wood-boring bivalves of the family Teredinidae (commonly called shipworms) are known to harbor dense populations of gram-negative bacteria within specialized cells (bacteriocytes) in their gills. These symbionts are thought to provide enzymes, e.g., cellulase and dinitrogenase, which assist the host in utilizing wood as a primary food source. A cellulolytic, dinitrogen-fixing bacterium, Teredinibacter turnerae, has been isolated from the gill tissues of numerous teredinid bivalves and has been proposed to constitute the sole or predominant symbiont of this bivalve family. Here we demonstrate that one teredinid species, Lyrodus pedicellatus, contains at least four distinct bacterial 16S rRNA types within its gill bacteriocytes, one of which is identical to that of T. turnerae. Phylogenetic analyses indicate that the three newly detected ribotypes are derived from gamma proteobacteria that are related to but distinct (>6.5% sequence divergence) from T. turnerae. In situ hybridizations with 16S rRNA-directed probes demonstrated that the pattern of occurrence of symbiont ribotypes within bacteriocytes was predictable and specific, with some bacteriocytes containing two symbiont ribotypes. However, only two of the six possible pairwise combinations of the four ribotypes were observed to cooccur within the same host cells. The results presented here are consistent with the existence of a complex multiple symbiosis in this shipworm species.
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Personally when we visit a coral reef we must be careful not to damage it by stepping on it or chipping off pieces for our own use.\nToxic waste and other sewage dumped into the water damages coral reefs, as well as a rise in water temperature that could be caused by global warming.
87625
parasitic ocean creatures?