Sea Lampreys came to the Great Lakes in the 1800s and they invaded the lakes. They are 12 to 20 inches long‚ and they have a deadly attack. These aquatic animal attack salmon‚ catfish‚ and trout. Since they are attacking freshwater fish‚ the fishing industry is decreasing‚and the other aquatic animals are receiving lack of resources. Before lampreys arrived‚ the United States and Canada had about 2.4 million fish each from the Great Lakes. When they came to the Great Lakes
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The black skirt tetra’s scientific name is Gymnocorymbus ternetzi. Tetras belong to the Characid family. Black skirts are also commonly referred to as black tetras or black widow tetras. The black skirt can be recognized by its characteristic black "skirt". There is also an albino version or white skirt tetra that is commonly available commercially. These are variations that occur naturally in the wild. White Skirt tetras are often dipped in pastel colors and marketed as fruit tetras. This dying
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CHAPTER ONE 1.1 Introduction Earth is the water planet with more than two-thirds of its surface covered by water. Most of life on Earth is also primarily composed of water; our cells‚ and those of plants and animals are composed of approximately 70 percent water. Vast quantities of water also cycle through the Earth ’s atmosphere‚ oceans‚ land‚ and biosphere over both short and long time scales. This grand cycling of water is called the hydrologic cycle. Precipitation‚ evaporation
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extensions of their backbones and broad ribs that expanded and grew together to form a complete shell that offered protection at every stage of its evolution‚ even when the bony component of the shell was not complete. This is supported by fossils of the freshwater Odontochelys semitestacea or "half-shelled turtle with teeth"‚ from the late Triassic‚ which have been found near Guangling in south-west China. Odontochelys displays a complete bony plastron and an incomplete carapace‚ similar to an early stage
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What is a wetland? Wetlands are areas that are inundated by water cyclically‚ intermittently or permanently and can have fresh‚ brackish or salt water. The main wetland types include swamps‚ marshes‚ bogs‚ and fens. Wetlands are the link between land and water and are some of the most productive ecosystems in the world. Depending on the type of wetland‚ it may be filled mostly with trees‚ grasses‚ shrubs or moss. An area doesn’t need to be permanently wet to qualify as a wetland. It just needs to
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aquarium is the final point of aquarist because it seems difficult and demanding. Its not same with growing a freshwater fish up. You have to pay attention a lot of different parameters of water and arrange it everytime. Many inaccurate legends have been generated about how difficult saltwater aquariums are to keep. Top Saltwater Aquarium Myths details explains why they are inaccurate. A freshwater aquarium is a bit simpler to set up and maintain than a saltwater aquarium. However‚ if the most common mistakes
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tranferring sperm between individuals ¡ Produces albumen which serves as a food source for the embryos as they develop within the cocoon CLASS CLITELLATA SUBCLASS OLIGOCHAETA SUBCLASS HIRUDINEA SUBCLASS OLIGOCHAETA ¡ Mostly found in freshwater or terrestrial habitat‚ very few are marine ¡ Includes the earthworms ¡ Lacks sensory structures such as eyes and tentacles ¡ Prostomium – anterior most region of the body ¡ Scavengers ¡ No specialized respiratory organ ¡ Locomotion: Peristaltic
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Name the five types of ecosystems used in this laboratory‚ [1]‚ [2]‚ [3]‚ [4]‚ and [5]. | | | | | Specified Answer for: 1 | tundra | Specified Answer for: 2 | taiga | Specified Answer for: 3 | desert | Specified Answer for: 4 | freshwater lake | Specified Answer for: 5 | tropical rain forest | | | | | Question 2 3.7 out of 3.7 points | | | Fungi are examples of Answer | | | | | Selected Answer: | E. decomposers | | | | | Question 3 3.7 out
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following terms and abbreviations are used throughout the entry: Acidification - the lowering of soil and water pH due to acid precipitation and deposition usually through precipitation; this process disrupts ecosystem nutrient flows and may kill freshwater fish and plants dependent on more neutral or alkaline conditions (see acid rain). Acid rain - characterized as containing harmful levels of sulfur dioxide or nitrogen oxide; acid rain is damaging and potentially deadly to the earth’s fragile
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Biology Animal Phylums "Write a three sentence description for each phylum and list two examples for each. Also‚ draw a picture of a common example from each. (or cut out of a magazine). You will be graded on how accurate your information is as well as neatness." Sponges (Porifera): Poriferans don’t have mouths; instead‚ they have tiny pores in their outer walls through which water is drawn. Cells in the sponge walls filter nutrients from the water as the water is carried through the body
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