2.) A Brief List of 21 Animal Phyla A. Invertebrate Phyla Parazoa: Simple animals without a digestive cavity. 1. Phylum Porifera (Sponges) Simple multicellular animals that spend their lives anchored to a rock or ocean bottom; they are mostly marine but some species live in fresh water; sponges have radial symmetry with a cylindrical‚ globose or irregular body containing an internal skeleton of minute spicules made of calcium carbonate‚ silica‚ or a fibrous collagen protein called spongin; the
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Life on Earth. 1. Analysis of the oldest sedimentary rocks provides evidence for the origin of life. * Identify the relationship between the conditions on early Earth and the origin of organic molecules. * Scientists estimate that the universe is 10-20 billion years old and arose as a big bang‚ which is still expanding the universe. * The early Earth was very different from the Earth today and no oxygen was present. This means that there was no ozone layer exposing the Earth’s surface
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Oceanography Test 1 Study Guide Chapter 1: Knowing the Ocean World An Ocean World • Ocean creatures provide 2% of humanity’s food • 1/3 of the world’s petroleum and natural gas are pumped from beneath the ocean floor • ~ 71% world is covered by water • Ocean – vast body of saline water that occupies the depressions of the earth’s surface • 97% of the water on or near the earth’s surface is contained in the ocean; less than 3% is held in land ice‚ groundwater‚ and freshwater
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Evolution as a theory * Theory- in science‚ a well substantiated explanation of some aspect of the natural world Evolution- the accumulation of inherited genetic changes within populations over generations * Does not refer to changes that occur in an individual within its lifetime * Not limited to speciation that may only occur over long periods of time * Can occur over a few generations‚ and is most commonly expressed as an adaptation to a changing environment or the change in allele
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Bio 101- Introduction to Biological Sciences I. Brief History of Biology. List down the contribution(s) of the following philisophers/scientists to the science of Biology Pre-historic people: The earliest humans must have had and passed on knowledge about plants and animals to increase their chances of survival. This may have included knowledge of human and animal anatomy and aspects of animal behavior (such as migration patterns). However‚ the first major turning point in biological knowledge
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1. INTRODUCTION Textile have much as important bearing on daily lives that everyone needs from earliest times‚ people have used textiles of various types for covering‚ warmth. Personal adornment and even to display personal wealth. Today textiles are still used for these purposes and everyone is an ultimate consumer. It begins in agriculture with fibre production of cotton‚ flax and other fibrous plants. These fibres are process into yarns and fabrics. The yarns are made into fabrics for industrial
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Dark Earth A Compilation of Essays on Dark Plasma Theory by Jay Alfred © Copyright 2011‚ Jay Alfred All rights reserved. No part of this publication may be reproduced‚ stored in a retrieval system‚ or transmitted‚ in any form or by any means‚ electronic‚ mechanical‚ photocopying‚ recording or otherwise‚ without the written prior permission of the author. Cover photograph: This shows the visible Earth sitting inside an invisible halo of dark matter particles. The halo has been given false
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Dan Brown Deception Point Deception Point by Dan Brown Acknowledgments With warm thanks to Jason Kaufman for his superb guidance and insightful editorial skills; Blythe Brown for her tireless research and creative input; my good friend Jake Elwell at Wieser & Wieser; the National Security Archive; the NASA Public Affairs Office; Stan Planton‚ who continues to be a source for information on all things; the National Security Agency; glaciologist Martin O. Jeffries; and the superb minds of Brett
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