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Free research papers and essays on topics related to: dissolved oxygen

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  • A Introduction - 1,026 words
    A. Introduction During the last twenty years, industrial livestock farms have been replacing the traditional family size farms that once raised most of the nations swine. The number of livestock animals produced in the United States has grown modestly in the past two decades, but the number of farms raising them has slunk dramatically because large producer now dominate the market. The large increase in industry farming has led to large quantities of manure. B. Problem Definition The over abundance of manure has become a problem that leads to problem with Pollution, heated debates between the industries and societies (people of the community), ways to try and find solutions for the pollution ...
    Related: dissolved oxygen, problem definition, real estate, solid, dairy
  • Brisbane River - 1,955 words
    Brisbane River 1.0 INTRODUCTION The Brisbane River has flowed for over 400 million years. The catchment of the Brisbane River has overcome phases of flood and drought while its origins altered as the surrounding land changed overtime. In 1823, John Oxley entered the river for the first time. At the time the river appeared clean and unpolluted. Oxley immediately recognised the river's potential as a site for new settlement, through his recommendation the city of Brisbane was established in 1825. The Brisbane River extends inland for 300km reaching its source at the foothills of the Great Dividing Range. The river's catchment occupies an area of approximately 30,000km2 and releases it waters i ...
    Related: brisbane, river basin, central business, water quality, improving
  • Corrosion And Rusting - 1,057 words
    ... Fe2+ (aq) + 2OH- Fe(OH)2 (s) The precipitate is rapidly oxidized by dissolved oxygen to form iron (III) hydroxide. 4Fe(OH)2 (s) + O2 (aq) + 2H2O (l) 4Fe(OH)3 (s) On standing, this changes to rust, a reddish brown solid. Rust is in fact hydrated iron (III) oxide with variable composition (Fe2O3 nH2O). Factors that speed up rusting 1) Presence of electrolytes Acid solutions make rusting go faster. In industrial areas where air is seriously polluted, there are high concentrations of carbon dioxide, sulfur dioxide and nitrogen dioxide. These gases dissolve in rain water to give "acid rain", which makes iron objects rust faster. Sodium chloride also makes iron rust more quickly. For exampl ...
    Related: corrosion, dissolved oxygen, carbon dioxide, acid rain, terminal
  • El Nino Has Been A Reoccurring Phenomenon For Centuries Man Has Only Started To Realize How Much Of The Worlds Weather Is Eff - 1,334 words
    El Nino has been a reoccurring phenomenon for centuries. Man has only started to realize how much of the worlds weather is effected by it. The term El Nino refers to an irregular warming of the seas surface. During the last 40 years there have been 10 significant El Nino occurrences. Most affecting the coast of South America. Water temperatures increase along the coast as far as the Galapagos islands. Weak events will raise the water temperature 2 to 4 degrees Celsius and will have minor impact on fishing. However strong events such as the 1982-83 event will disrupt climate conditions around the world as well as local conditions. It has been linked to floods and droughts all over the world. ...
    Related: nino, phenomenon, weather, world economy, early stages
  • Introduction - 957 words
    Introduction In the pond water lab experiment, our group has chosen to test the effects of nitrates on a pond community. After a lot of research, we have found that nitrates in a pond community can increase growth rates of plants and some animals. The effects of nitrates include algal blooms, which is when too much food or nutrients are consumed by producers, (i.e. algae) causing them to grow and spread, so they consume all of the dissolved oxygen in the water. Most animals in water like many kinds of fish and some insects need certain levels of dissolved oxygen to live. When it is used up due to algal blooms, they die due to lack of oxygen. It also causes plants who need certain levels of d ...
    Related: dissolved oxygen, collecting data, different levels, nitrate, algal
  • Lake Tahoe On West Coast - 1,637 words
    ... rients into the lake. The adversity varies with the varying land disturbances. Air quality controls obviously aid in the fight to protect the lake, but more emphasis is needs to be geared towards wetland preservation and land controls and watershed management. Water Inflow and Algae Growth Waterflow into lake Tahoe is the number one contributor to the decline in clarity because of all the elements combining to impact the quality of input into the lake. Lake Tahoe is filled by 63 streams and thus creating a web linking the wetlands, groundwater, streams and lake ecosystems. Displayed earlier is the importance of each ecosystem to each other in creating a balance in the lake. The uniquenes ...
    Related: coast, lake, lake tahoe, tahoe, west coast
  • Organism Adaptations - 1,775 words
    ... rain and spinal chord's inter neurons -> motor neurons -> arm muscles Movement and Locomotion - for protists and animals, responses usually involves some form of movement - all animals are capable of some sort of movement - an animal's movement is controlled by its nervous system locomotion: movement from one location to another - Most animals have some form of locomotion. Locomotion can be difficult to study because some animals move very quickly Nervous and Locomotory Systems of the Earthworm - earthworms respond to light, touch, moisture, and chemicals - sense receptors are located under the skin - central nervous systems of the earthworm is a double spinal chord - nerve chord is conn ...
    Related: organism, solid waste, blood cells, global warming, circle
  • Ozonification In Water Treatment - 267 words
    Ozonification In Water Treatment Ozonification in Water Treatment Report Ozone is nature's agent for cleaning and treating both air and water. That clean fresh smell in the air following a thunderstorm, the bright sky and brilliant colors of nature are due to ozone - created by lightning and the Sun's energy. Ozone is a gas that is created naturally in our atmosphere when oxygen in the air is exposed to high intensity ultraviolet rays. Both the sun and lightning create the ozone. Ozone is also one of nature's best bleaching agents, restoring discolored water to its naturally clear state. As an oxidizer and microflocculant, it also helps reduce unwanted organic material form water, such as ir ...
    Related: drinking water, water treatment, world wide, oxygen content, bright
  • Phosphates In Water Pollution - 869 words
    Phosphates in Water Pollution Phosphates may be created by substituting some or all of the hydrogen of a phosphoric acid by metals. Depending on the number of hydrogen atoms that are replaced, the resulting compound is described as a primary, secondary or tertiary phosphate. Primary and secondary phosphates contain hydrogen and are acid salts. Secondary and tertiary phosphates, with the exception of those of sodium, potassium and ammonium are insoluble in water. Tertiary sodium phosphate is valuable as a detergent and water softener. The primary phosphates tend to be more soluble. Phosphates, which are an important component to metabolism in both plants and animals, help in the first step in ...
    Related: drinking water, pollution, water pollution, harmful effects, acid rain
  • Phosphorus: Chemical Reactions Of Phosphorus And Its Importance - 730 words
    Phosphorus: Chemical Reactions of Phosphorus and Its Importance Abstract: Aluminum sulfate reacts with phosphates to create aluminum phosphate and a sulfate. The conversion of the phosphate to aluminum phosphate is very important because this allows the phosphate to be easily extracted. This manipulation is used today in industrial waste treatment sights. The removal of phosphates is very important for if phosphates are not removed, they plague bodies of water by feeding algae which clog the surface waters and eventually effect every living and nonliving thing in that environment. Chemical Process: The reactions which occur are the following: Aluminum sulfate(alum) in combination with wastew ...
    Related: phosphorus, bodies of water, benjamin cummings, washing machine, drop
  • Water Pollution - 715 words
    Water Pollution Water Pollution Water pollution needs to be stopped. Pollution of lakes rivers, streams, and oceans has been killing land and water animals for years. Polluting water is a horrible act and will be stopped. Water pollution kills all kinds of animals every year. Just the EXXON VALDEZ oil spill near anchorage Alaska caused over 3,000 otters to die 36,000 different kinds of seabirds were killed and over 100 eagles. Oil spills are one of--if not the worst types of pollution. They happen most often in the ocean and then get spread around by tides and currents where they enter streams and rivers and cover everything. They kill life and pollute more in a short amount of time than pes ...
    Related: clean water, pollution, pollution control, water pollution, exxon valdez
  • Water Quality Lab - 269 words
    Water Quality - Lab#4 Lab #4 Oakland Ravine and Lake: Water Quality 1. The pH levels are fairly constant for inlet and outlet. The dissolved oxygen(dO), on the other hand, varies very much between the inlet and the outlet. The measurements of the pH and the dO of the water do not differ greatly. By comparing the two graphs given I can see that both the pH and the dissolved oxygen are lover in the winter. I think this is related to the amount of sunlight that the water receives and also the temperature of the water. In the given maps the dO drops off very sharply at various points. I would assume this is a sign of eutrophication. That would also explain why in the winter the dO is much more s ...
    Related: water quality, food chain, dissolved oxygen, temperature, lake
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