off on 2002 due to warm water‚ growth of toxic algae‚ and diseases Dams removed in 2009 Water is abundant‚ but usable water is rare 70 percent of Earth’s surface is covered by water‚ but 97% is salt water. One fourth of the less than 3% of freshwater is found underground. Remaining three fourths above ground is found mostly in ice and glaciers. Usable water by humans is found in the form of streams‚ rivers‚ wetlands‚ and lakes Groundwater exists in the multitude of small spaces found within
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Crocodile Vs Alligator If we go back to the journey of ancient times is only as far away as the local zoo. Now‚ peoples can see alligators and crocodiles‚ remains of the dinosaur stage. The alligator family involves the caiman‚ and the crocodile family involves gavial; and they both are found in many parts of the world. Alligators and crocodiles are strong creatures that have obvious similarities‚ but they do also have differences. First‚ alligators and crocodiles have the same physical types‚ yet
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eat both plants and meat. Some kinds eat mostly plants‚ but other kinds eat mostly small animals. Some turtles live in the sea and others live in fresh water. Freshwater turtles stay in the water most of the time‚ and sometimes come onto land. They have long legs and webbed feet with claws. They are found in rivers‚ streams and lakes. Freshwater turtles hibernate deep in the warm mud in the bottom of a stream‚ pond or lake. Sea turtles live in the warmer oceans. Their legs have developed into flippers
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naturally present. We now know more than 70.000 water pollutants. 2. About 450 cubic kilometres of wastewater are carried into coastal areas by rivers and streams every year. These pollution loads require an additional 6‚000 cubic kilometres of freshwater to dilute the pollution. This amount equals to two-thirds of the world’s total stable run-off. 3. Public water supplies must meet or exceed certain standards. The kind of standards that are used differ for each country. Many public water supplies
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class Gastropoda that have a coiled shell that is large enough for the animal to retract completely into. When the word "snail" is used in this most general sense‚ it includes not just land snails but also thousands of species of sea snails and freshwater snails. Occasionally a few other molluscs that are not actually gastropods‚ such as the Monoplacophora‚ which superficially resemble small limpets‚ may also informally be referred to as "snails". Snail-like animals that naturally lack a shell
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Chapter 7 Multiple Choice Questions Name: ____________________________________________________________ 1) Any network of relationships among a group of components‚ which interact with and influence one another through exchange of matter and/or information‚ is referred to as ________. A) an interchange B) a system C) an ecosystem D) an environmental collaboration E) hierarchy Diff: 1 Objective: 7.1 Systems‚ ecosystems‚ biotic‚ and abiotic
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Throughout chapters six and thirteen‚ Charles Darwin uses an array of scientific areas to show how the data seen in them could support his theory of evolution; these points he uses include the fossil record‚ instinct‚ biogeography‚ taxonomy‚ comparative anatomy‚ and embryology. I will be discussing Darwin’s arguments on biogeography and taxonomy‚ and how his theory explains the data found in these two topics. In chapter eleven‚ Darwin begins his exposition on the importance of biogeography in natural
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Animal Kingdom The animal kingdom is a taxonomic kingdom composed of multicellular‚ eukaryotic organisms. Mostly‚ their body structures become fixed as they develop‚ yet still some organisms in this kingdom have the ability to undergo metamorphosis. The majority of these organisms are motile‚ which means they can move on their own and with spontaneity. All animals are heterotrophic‚ which implies that they depend on other organisms for food. Animals live in places that provide their necessities
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environmental issue is littering in the ocean. Everyday hundreds‚ thousands‚ and even millions of trash is dumped into the ocean. Hundreds of marine species eat large amounts of plastic debris. “Yet the question is why so many species from the tiniest zooplankton to whales‚ mistake so much of it for food has never been fully explored” (Parker). Some studies say because of the smell of the algae in the ocean. That very well could be true. As algae breaks down naturally in the Ocean they emit a stinky sulfur
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Water Pollution: Causes‚ Effects‚ and Prevention What would you say the most valuable thing on earth is? Many people would quickly answer that something with monetary value‚ like oil or gold‚ would be the most valuable thing on earth. However‚ humans are able to live‚ and have lived‚ without utilizing these things for many years. There is a thing that every living being‚ creature‚ and plant on earth could not survive without. It is one of our most basic needs‚ and yet we take it for granted so
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