• An Ecosystems Disturbance By A Pollutant
    3,029 words
    'An Ecosystem's Disturbance by a Pollutant Paul Cordova L. Lehr December 11, 1995 Freedman defines a pollutant as 'the occurrence of toxic substances or energy ina larger quality then the ecological communities or particular species can tolerate without suffering measurable detriment' (Freeman, 562). Although the effects of a pollutant on an organism vary depending on the dose and duration (how long administered). The impact can be one of sub lethality to lethality, all dependent upon the factor...
  • Oceans Gulf Stream
    1,264 words
    Two-thirds of our planet is covered with oceans. The Pacific, the Atlantic, the Indian, and the Artic are the world's major oceans. They were formed by a series of geological processes that continue to affect the Earth. Seven main parts, called plates, make up the Earth's mantle layer and crust. The plates fit together millions of years ago, and are constantly moving (at a slow pace-like a fingernail grows) over a layer of squishy, soft rock called asthenosphere that lies beneath the crust. Magm...
  • Oceans Gulf Stream
    2,527 words
    Two-thirds of our planet is covered with oceans. The Pacific, the Atlantic, the Indian, and the Artic are the world's major oceans. They were formed by a series of geological processes that continue to affect the Earth. Seven main parts, called plates, make up the Earth's mantle layer and crust. The plates fit together millions of years ago, and are constantly moving (at a slow pace-like a fingernail grows) over a layer of squishy, soft rock called asthenosphere that lies beneath the crust. Mag...
  • Dioxin Pollution Agent Orange
    1,122 words
    Dioxin is one of the most toxic chemicals known. A report released for public comment in September 1994 by the US Environmental Protection Agency clearly describes dioxin as a serious public health threat. The public health impact of dioxin may rival the impact that DDT had on public health in the 1960's. According to the EPA report, not only does there appear to be no 'safe' level of exposure to dioxin, but levels of dioxin and dioxin-like chemicals have been found in the general US population ...
  • The Horrifying Details Of Mad Cow Disease
    2,730 words
    The Horrifying Details of Mad Cow Diseasebyyour name Research WritingTeacherSeptember 30, 2002 Last name ii The Horrifying Details of Mad Cow Disease Mad Cow Disease, scientifically referred to as (BSA) Bovine Spongiform Encephalopathy, is a disease that affects those humans who eat the meat from infected cows. I. Introduction II. Opening Story A. Introduction to story B. Where he is from C. Beginning point D. Effects C. Death III. How it comes to be A. How it spreads B. What they feed the ani...
  • The Bald Eagle Community
    719 words
    The bald eagle was finally adopted as the emblem of the United States in 1787 because 'its long life, great strength, and majestic looks, and also because it was then believed to exist only on this continent.' The bald eagle has survived for many years. It was almost lost at one point, and finally now is on its way back and the numbers are rising thanks to many efforts by various foundations. The Bald Eagle is more than a just a bird like every other species it too has a special part in keeping ...
  • Active Transport Cell Energy Water
    547 words
    1. ) Cellular Transport. Osmosis Osmosis is the diffusion of water molecules across a differentially permeable membrane from a region where water molecules are more concentrated to one where they are less concentrated. The transport of water is simple the cell being selectively permeable will allow water through it until an equilibrium is reached and at that time water will flow both in and out of the cell maintaining the equilibrium. For example a red blood cell is placed into a isotonic soluti...
  • Gulf War Oil Iraq Kuwait
    726 words
    The Gulf War On the 2 nd of August 1990, Iraq invaded Kuwait. Millions of trees, wildlife, marine life, humans and the environment in general, were destroyed. This invasion, was called the GULF WAR. The social, environmental and economic impacts will be felt for years. The Gulf War was a major environmental disaster. Wildlife and their habitat was destroyed both in Iraq and Kuwait. Grass, soil and trees were destroyed by bombing, oily particles (which was from the numerous fires, resulting in a...
  • The Hudson River And Pcb Pollution
    1,543 words
    The Hudson River and PCB Pollution The Hudson River is a body of water that stretches for 315 miles from the Adirondack Mountains to the Battery in Manhattan, reaching its deepest point of 216 feet in the Highlands near Constitution Island and West Point and reaches its widest point of 3 miles across at Have straw. This river is one of the most beautiful and scenic of the Tri-State area. Unfortunately, it happens to be New Yorks most polluted river. The river has been influenced upon since the e...
  • Absolute Justice One Nature Order
    1,023 words
    Does absolute justice exist or not? This essay will present arguments for the existence of absolute justice. Many people disagree that absolute justice exists. Thus they argue that justice cannot be derived from nature since contradictory and different forms of justice exist in nature; and one cannot derive the greater and perfect from the lesser and imperfect, also they argue that the idea of absolute justice is the ideas of different cultures and times. That is why the idea of justice varies g...
  • Light Food Chain
    894 words
    LIGHT: A FUNDAMENTAL FORCE IN OUR WORLD If asked what light is, one could say that it's one of the most basic elements of our world and our universe as we perceive it. It is through sight that we receive 90% of our information. It is through the use of telescopes aiding the naked eye that we are aware of the heavenly bodies around us. It is through light that the energy from the sun is transferred to us. The sun's energy supports the food chain; plants use it to turn water and CO 2 into energy ...
  • El Ninos Wrath Food Chain
    1,770 words
    El Nino's Wrath Microscopic, photosynthetic phytoplankton produce seventy one percent of the world's Oxygen. A reduction in the world's phytoplankton population would be detrimental to all terrestrial and aquatic life. The event known as El Nino-Southern Oscillation (ENSO) is a complex interplay between the ocean and the atmosphere causing a reversal in the trade winds, which in turn moves warm water masses to opposite sides of the Pacific Ocean. Better known for it's atmospheric effects, El Nin...
  • Columbian Voyages Their Effec
    770 words
    In his article "The Columbian Voyages, the Columbian Exchange, and Their Historians", Alfred W. Crosby seems to think that much of the Columbian voyages and what came out of them was detrimental to many cultures, most of all the Native Americans. Crosby brings up many institutions and ideologies to re-enforce his opinion, such as the slave trade and the conquest of many Native American cultures. One of the major effects of the Columbian exchange was the decimation of the Native American populati...
  • Consumer Analysis In A Dynamic Food Market
    3,221 words
    CONSUMER ANALYSIS IN A DYNAMIC FOOD MARKET ABSTRACT Consumer analysis is a very complex matter. There is an increasing interest to study it for more intensively due to the political dimension of some food safety problems in the last decade. The concern on health and nutrition has stimulated the research on different attributes and comparative advantages of consumption habits and diets. However, under a practical point of view, we should focus our attention in a broad horizon, with a mixture of n...
  • Hawks Birds Of Prey
    1,310 words
    Major Groups of the Animal The major group that hawks belong to is the bird group. Hawkshave wings and feathers to fly. Which all are characteristics of birds. The hawk has eyes on the sides of its head so it can see all around, similar to a normal bird. The differences between the hawk and other birds is that the hawk is a bird of prey. 'Birds of prey'; or raptors make their living by hunting, killing, and consuming live animals. They are at the top of the ecological food chain which makes the...
  • Food Chain Energy Organic Plants
    1,434 words
    A food chain is an idea developed by a scientist named Charles Elton in 1927. He described the way plants get energy from sunlight, plant-eating animals get their energy from eating plants, and meat-eating animals get their energy from eating other animals. The idea of a chain means that all these animals are linked together, so anything that affects one link in the chain affects everything in the chain. ]The key concept that we need to learn from food chains, food webs and food pyramids is the ...
  • Ozone Layer Aerosol Spray
    898 words
    Society has been widely addressed with the many problems that we are having in our environment today. A major problem is that of CFCs. CFC stands for Chlorofluorocarbons which are found in many of the aerosol spray cans. In December of 1973, Rowland and Molina discovered that CFCs can destroy the ozone in the stratosphere. In June 1975, the Natural Resources Defence Council (NRDC) sued the Consumers Product Safety Commission for a band of CFCs used in aerosol spray cans. United States's fifth la...
  • Caddisfly Larva Found Water Insects
    713 words
    The field trip to Elk Island Park taken by both biology twenty classes was an interesting and fun day. We learnt about many different types of plant and animal life in different ecosystems and how they contribute to their ecosystem. The two main ecosystems we looked at in detail were the marsh and the bog. We look at and recorded facts about the abiotic and biotic factors in the area to better understand the importance of these ecosystems. The first thing we learnt about was some of the biotic a...
  • Great Barrier Reef Reefs Form
    1,575 words
    Multi strand Science HOW IS THE GREAT BARRIER REEF MADE? 1. Copy Figure 9. 12 into your book. Include the underwater contours on your map. How long is The Great Barrier Reef? Where is the reef widest? Where is it narrowest? 2. Why do you think it is called The Great Barrier Reef? Is it really a barrier? The reef got it's name by 'Great' because of it's size and 'Barrier' because it has been built up in front of the coast like some massive barrier. 3. Which factors have set its Northern and Sout...
  • Evolution Food Chain
    1,128 words
    This short report will give you a short summary on evolution and how it my affect us, or even surroundings. Also, how it my affect our food chain and if one thing would die how the other would suffer because of that, for an example if you had snakes and birds and if snakes were to die birds population would drop. Why, because birds feed on snakes. Now a part of the food chain contains something called "niche" now you are asking what that is, so I guess that I will answer that question, it basica...