Background information Daphnia Magna is an arthropod that can grow up to 5 mm. It is a filter feeder meaning it feeds off of suspended particles in the water. Daphnia can consume particles that range from 1µ to 50µ. The heart of Daphnia is located dorsally meaning it’s located in the back. The heart rate of Daphnia can range due to many variables‚ one being temperature. "At a temperature averaging 20o C its heart rate is about 200 beats per minute."2 As the temperature surrounding the Daphnia
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QUEENSLAND GOVERNMENT | Adaptations | A comparison of the salt water crocodile and fresh water crocodile | | | 2/27/2012 | | Figure 1 – Saltwater Crocodile Figure 2 – Freshwater Crocodile Subject: SCX101B School: Name: Completed: 12/03/12 I declare that the work submitted is my own with no part written/produced for me by any other person. I have acknowledged the people who have provided assistance and the materials referred to in developing my ideas have been acknowledged
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evaporation (net flow of fresh water into ocean); most estuaries are this type. Negative estuary – evaporation exceeds fresh water input. This can happen in tropical lagoons with little freshwater input (salinity 35 ppt. Hypersaline lagoons Indian river lagoon‚ 42 ppt has been recorded. Neutral estuary – freshwater input- evaporation. This system is not used much anymore‚ because a single estuary could go from 1 to 3 to 2 in a year. Classification Based
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water? Purpose: I want to know why the egg floats in fresh water and not salt water. I want to know if the egg will float in salt water‚ Also this shows why materials float easier in saltwater and sink in freshwater. Research: Since the egg’s density is higher than the density of freshwater the egg will sink. Density is mass per unit volume‚ which means a measure of how much mater is in a certain volume. If you add enough salt the egg will float again. The salt makes the water denser because the
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primary sources that is‚ microorganisms living in Lake residues and freshwater swamps. The increase will surpass the prevalence of carbon dioxide. Its growth has forced scientists to investigate the impact of the increase. It is known that greenhouse gases cause global warming that consequently cause droughts‚ the spread of diseases and changes in the ecosystem among other effects (Reay‚ 2010 p.76). Researchers noted that freshwater microorganism‚ through the process of methanogenesis produces methane
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possibly due to a positive convective feedback. There is also “Freshwater Flux Global Warming” which states the roles of freshwater flux (defined as evaporation minus
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ecosystem. An aquatic ecosystem is an ecosystem located in a body of water. Communities of organisms that are dependent on each other and on their environment live in aquatic ecosystems. The two main types of aquatic ecosystems are marine ecosystems and freshwater ecosystems. What is an aquatic ecosystem? Aquatic systems are those that contain plants and animals that predominantly depend on a significant amount of water to be present for at least part of the year. But a perfect definition is tough to make
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------------------------------------------------- Species A total of 14 extant species have been recognized. Further genetic study is needed for the confirmation of proposed species under the genus Osteolaemus‚ which is currentlymonotypic. Species name | Image | Distribution | Description/Comments | American crocodile(Crocodylus acutus) | | Throughout theCaribbean Basin‚ including many of theCaribbean islands andSouth Florida. | A larger sized species‚ with grayish color and a prominent V-shaped
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down into two categories: o Freshwater‚ which includes rivers‚ streams‚ ponds‚ lakes and freshwater wetland. o Marine or saltwater‚ which includes oceans‚ seas‚ estuaries‚ coral reefs and saltwater wetland. Each of these aquatic ecosystems can be defined by variables such as temperature‚ the presence or absence of light‚ and the availability of nutrients. Aquatic biomes cover almost all the world (around 75% of the surface) and only 3% of them are freshwaters. Freshwater ecosystems This ecosystem
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organized and 2 IFARMCs are integrated (Lamon Bay & Tayabas Bay) Contributed 151‚213 M.T. or 37% of the total regional production for CY 2010 Major marine resources include Calauag Bay‚ Lamon Bay‚ Polillo Strait‚ Ragay Gulf and Tayabas Bay Major freshwater resource is Tikub Lake in Tiaong‚ Quezon Length of coastline is 1‚066.36 kms. 2010 Production Profile: Commercial Fisheries 1. No. of fishermen – 1‚010 2. No. of fishing vessels – 181 3. No. of fishing gears - 122 4. Production – 73‚446.07 M
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