Someone at the beach is swimming out in the deeper water‚ and all of a sudden‚ a dorsal fin pops out. For everyone on the beach who sees it‚ music from Jaws starts playing in their heads. The swimmer does not even notice it‚ and in a few seconds‚ a great white shark veraciously attacks him. This is what comes to mind when most people think of sharks‚ but they are not really just man-eating monsters of the sea. Sharks are a fascinating group of fishes that strike fear into the minds of humans
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Introduction Over the last decade‚ there has been an increased focus on the impact of human activities on the planet and studying the potential impacts of ocean acidification (OA). Ocean acidification describes a change in the carbon chemistry of the ocean which has been a steadily emerging global environmental health concern. Oceans cover nearly 70 percent of the planet’s surface and play a crucial role in regulating atmospheric carbon dioxide through physical‚ chemical‚ and biological processes
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Meaning of Global Warning A gradual increase in the overall temperature of the earth’s atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide‚ CFCs‚ and other pollutants. Climate change is any substantial change in Earth’s climate that lasts for an extended period of time. Global warming refers to climate change that causes an increase in the average temperature of the lower atmosphere. Global warming can have many different causes‚ but it is most
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space on the rock surface. d. Intraspecific competition among barnacles for space and food. iii. Predation e. Crabs (blue crabs) feed on periwinkles. f. Periwinkles feed on green algae. g. Barnacles eat seaweeds and planktons in the water. h. Limpets
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Global warming is the increase of Earth’s surface temperature due to the effect of greenhouse gases. The main causes of global warming is the greenhouse effect‚ fossil fuels in cars‚ and global emission. Global warming is having an effect on our environment such as rising seas‚ changes in rainfall patterns‚ and etc. What we can do to stop this is‚ lower down emissions‚ cut greenhouse gases and so on. This paper will focus on what global warming is doing to our environment. The greenhouse effect
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precipitation. In the upper part of lakes there is a good supply of light‚ heat‚ oxygen‚ and nutrients‚ well distributed by currents and turbulence. As a result‚ a large number of diverse aquatic organisms can be found there. The most abundant forms are plankton (chiefly diatoms)‚ algae‚ and flagellates. In the lower levels and in the sediments‚ the main forms of life are bacteria. See also limnology. Heavy Water Water from most natural sources contains about 0.015% deuterium
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Every time you ask for a styrofoam hot cup to hold your cold drink in during the summer‚ you are putting your comfort before the health of every marine and land wildlife‚ as well as yourself. Styrofoam has known chemicals‚ such as styrene‚ that has a direct correlation to carcinogenic health hazards‚ vision loss‚ and nervous system breakdown. Many people hear or read about how styrofoam is bad for the environment but rarely do they change the way they live their lives simply because they are not
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The ozone layer is a layer in Earth’s atmosphere which absorbs most of the Sun’s UV radiation. It contains relatively high concentrations of ozone (O3)‚ although it is still very small with regard to ordinary oxygen‚ and is less than ten parts per million‚ the average ozone concentration in Earth’s atmosphere being only about 0.6 parts per million. The ozone layer is mainly found in the lower portion of the stratosphere from approximately 20 to 30 kilometres (12 to 19 mi) above Earth‚ though the
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appear in a ribbon-like grouping that remain attached to the female for approximately one month before the mother deposits the eggs in salt water to hatch. When hermit crab eggs hit salt water‚ they immediately open to produce small larvae-like or plankton swimming creatures called zoea. They develop by in stages‚ each stage lasting about a week. At each molt‚ they grow larger and add more appendages.
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Marine life is very unique there are many creatures that live below the sea.The Aetobatus narinari or its common used name the Spotted Eagle ray is in the kingdom of Animalia (en.wikipedia.org/wiki/Eagle_ray). It is a multicellular organism that is motile‚ which means they can move independently the eagle ray is an animal (en.wikipedia.org/wiki/Animal). The eagle ray’s phylum is Chordate because it had a nerve cord during development and it has a spine.(http://marinelife.about.com/). The class is
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