Within the past few decades‚ there has been no political or public discussion as heated and controversial as the debate over climate change. Climate disputes can be traced back all the way to 1837‚ when Louis Agassiz proposed a theory claiming that Switzerland had once been covered with large ice sheets‚ and have become a big part of the international scientific community since then (Archer and Rahmstorf 2010). Today‚ climate change is not only a scientific issue‚ but it has grown into an economic
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Kingdom Protista: Characteristics Mostly unicellular‚ eukaryotic cells Reproduce asexually or sexually by conjugation Exhibit all three modes of nutrition Photosynthesis Ingestion Absorption Ultimately spawned all multicellular kingdoms Very diverse kingdom Difficult for taxonomists to agree on classification Diverse Modes of Nutrition Use diverse modes of nutrition Ingest
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Great Barrier Reef‚ Australia Organisms that can be found in this ecosystem – Seaweed – P Sea grass – P Zooxanthellae – P Phytoplankton – P Zooplankton – C Omnivore Krill – C Omnivore Prawn – D Platygyra hard coral – C Omnivore Turbinaria hard coral – C Omnivore Bottlebrush coral – C Omnivore Bubble coral – C Carnivore Needle coral – C Omnivore Giant clam – C Omnivore Cone shell – C Omnivore Nudibranchs – C Omnivore Mollusks – C Carnivore Zig-zag oysters – C Omnivore Cowries
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near water and are either emergent‚ submergent‚ suspened or floating type. They exists in two forms namely microphytes and macrophytes. Microphytes include microscopic‚ uni or multicellular primitive algal forms called phytoplankton. The intensive growth of Phytoplankton causes colouration of the pond.They grow vigorously in the months of septermber to February and provide food for migratory birds. Macrophytes include large‚ advanced angiosperms . Pulicat Lake is the second largest Brackish
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The upper layer of the atmosphere surrounded by ozone (15 to 30 Kms) is known as ozonosphere. Ozone layer is a protective stratospheric layer‚ also known as ozone umbrella. Ozone concentration differs by about 10 ppm in stratosphere compared to 0.05 ppm in troposphere. It acts as a protective shield for the man‚ animals and plants by filtering out the lethal ultraviolet rays from reaching the earth’s surface. If the ozone layer is not there‚ the harmful ultraviolet rays will reach to the
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withstand harsh environmental conditions (Gajardol et al. 2001). More specifically‚ A. franciscana are known to live in high salinity lakes that are often basic (Biology 108 Lab Manual 2015). Furthermore‚ A. franciscana feed on photosynthetic phytoplankton which inhabit areas of light availability but are also more susceptible to predation in highly-lit areas (Biology 108 Lab Manual 2015). Also‚ A. franciscana can withstand a broad range of temperature except extreme values may affect survival (Biology
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Executive summary: Whale fishing‚ also known as whaling‚ is a traditional fishing activity which existing thousands of years in the world. Fisherman fishing whales‚ sell of whale meat and oil to make money. With the development of modern fishing technology‚ industrial fishing gradually replaces a large number of private fishing activities‚ which made whaling easier and more efficient. Greenpeace International’s data showed “Commercial whaling during the last century decimated most of the world’s
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Algal Culturing Techniques Algal Culturing Techniques Edited by Robert A. Andersen Amsterdam • Boston • Heidelberg • London • New York • Oxford Paris • San Diego • San Francisco • Singapore • Sydney • Tokyo Academic Press is an imprint of Elsevier Acquisitions Editor: Frank Cynar Project Manager: Justin Palmeiro Editorial Coordinator: Jennifer Hele Marketing Manager: Linda Beattie Cover Design: Suzanne Rogers Composition: SNP Best-set Typesetter Ltd.‚ Hong Kong Printer: Hing Yip
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affected by man’s presence (sea urchin). Table showing the organisms present on the cay and their preys Organisms Being Fed On | Organisms Feeding | Flowers | Snails and Bees | Snails and Fish | Turtle | Leaf litter | Earthworm | Phytoplankton | Zooplankton | Algae | Sea Urchin and Fish | Fungi | Crab and Sand Fly | Wood | Wood Boring Beetle | Tree Bark | Termite | Woodlouse and Bees | Spider | Bird | Pelican | Bees and Earthworm | Bird | Discussion Questions: (a)
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Declining Biodiversity Deanna Garrett ENV495 Jeanne Lambert May 6‚ 2013 Declining Biodiversity Biodiversity is important in ecosystems because every life form works together in order for them to function. When these ecosystems are disrupted or altered‚ or even lacks biodiversity‚ it poses major threats to all the life forms in it‚ whether it happens quickly or over a long period of time. These threats include atmospheric pollution‚ weather catastrophe‚ climate changes‚ or even man-made
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