The water came from outer space to Earth. The water was brought to the planet for the comets. The water has a different structure for each state (gas‚ liquid‚ ice). Liquid water has random molecules. On the other hand‚ the ice has a more stable structure. The different structure between ice and liquid water can explain why the ice has less density than liquid water. Temperature is responsible for increasing the dissolution of components‚ and electrical conductivity. Pure water is not a good conductor
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Water is the foundation of life. And still today‚ all around the world‚ far too many people spend their entire day searching for it.Water covers 70% of our planet‚ and it is easy to think that it will always be plentiful. However‚ freshwater—the stuff we drink‚ bathe in‚ irrigate our farm fields with—is incredibly rare. Only 3% of the world’s water is fresh water‚ and two-thirds of that is tucked away in frozen glaciers or otherwise unavailable for our use. Waterscarcity can be defined as a condition
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FOOD CHAINS and FOOD WEBS There are two types of feeding relationships: autotrophic and heterotrophic. Autotrophic organisms make their own food by the process of photosynthesis e.g. plants. Heterotrophic organisms cannot make their own food (i.e. cannot carry out photosynthesis)‚ therefore must eat other organisms to get their nutrients e.g. animals. A food chain is the feeding relationship among organisms or the series of living organisms that eat each other. A food chain shows the transfer
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University Press. Oxford. Little‚C. & Kitching‚J.A. 1996. The Biology of Rocky Shores. Oxford University Press. Oxford. Mann‚ K.H. 2000. Ecology of Coastal Waters: with implications for management. 2nd edn. Blackwell Science Moss‚B. 2010. Ecology of Freshwaters: a view for the 21st century. 4th ed. Wiley‚ Chichester. Nybakken‚ J.W. & Bertness‚ M.D. 2005. Marine biology: an ecological approach. 6th edn. Benjamin Cummings‚ San Francisco. Peterken‚G. 1993. Woodland Conservation & Management. 2nd ed. Chapman
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temperatures will bring a host of changes to include retreating and eroding shorelines‚ dying coral reefs‚ salt water intrusion into the freshwater aquifer‚ increasing numbers of forest fires‚ and warmer air and sea surface temperatures. Increased salinity would occur from rising saltwater into the Everglades from the Florida Bay. The increase in salinity would damage freshwater ecosystems. Changing Climate Changing climate causes changes in vegetation or habitat characteristics in terrestrial habitats
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Fish cold-blooded‚ limbless‚ completely aquatic vertebrates‚ having gills‚ commonly fins‚ and typically elongated torpedo-shaped body mostly covered with scales. Fish are usually grouped into four classes‚ three living (Agnatha‚ Chondrichthyes‚ and Osteichthyes) and one extinct (Placodermi): 1. Agnatha‚ the primitive jawless fishes‚ including the cyclostomes (lampreys and hagfishes) and extinct armoured fishes known as ostracoderms‚ none of which has gill arches (bony frames for the gills);
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Jet skis Thesis statement: Jet skis should be banned from some waterways because they are loud‚ create environmental mess‚ and harm animals. INTRODUCTION I. Jet skis can be fun‚ but they are also hazardous. A. Jet skis are popular. 1. More than 1.3 million jet skis (also called personal watercraft) are in use‚ with annual sales of about 200‚000—one-third of all boat sales. 2. Some people love them and want to use them
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their habitat. The term aquatic can in theory be applied to animals that live in either freshwater (freshwater animals) or saltwater (seawater animals). However‚ the adjective marine is most commonly used for animals that live in saltwater‚ i.e. in oceans‚ seas‚ etc. Invasive aquatic animals require a water habitat‚ but do not necessarily have to live entirely in water.[3] Aquatic animals (especially freshwater animals) are often of special concern to conservationists because of the fragility of their
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subfamily Salmoninae which are fishes that can be found in freshwater and saltwater or both. The well-known salmon is one member of the trout family‚ and unlike other trout members‚ it prefers to stay in seawater. Here are some highlights on famous members of the trout family explained in an alphabetical order #1 - Adriatic trout‚ Salmo obtusirostris Another name (s): Adriatic salmon‚ soft mouth trout‚ soft muzzled trout. This is both a freshwater and saltwater fish which comes from genus Salmo‚ the
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What is desalination? Desalination is the process of removing salt‚ especially from sea water so that it can be used for drinking or irrigation. Midkiff quotes that “97% of the earth is sea water” (136). What happens once the earth runs out of freshwater‚ and has to turn to the vast amount of undrinkable ocean/sea water? Desalination has to happen. However‚ there is already two types of desalination plants available. Reverse osmosis and distillation are two types of desalination plants (137).
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