Biology Essay

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Biology A Guide to the Natural World Chapter 1 • Lecture Outline Science as a Way of Learning: A Guide to the Natural World Fifth Edition David Krogh © 2011 Pearson Education, Inc. © 2011 Pearson Education, Inc. 1.1 How Does Science Impact the Everyday World? © 2011 Pearson Education, Inc. How Does Science Impact the Everyday World? • Science plays an increasingly important role in the everyday lives of Americans. • Until the mid-1990s, most Americans did not use e-mail, cell phones, or the Internet. © 2011 Pearson Education, Inc. What Do Americans Know About Science? © 2011 Pearson Education, Inc. Figure 1.1 What Do Americans Know About Science? • The average American has at best an uneven knowledge of science. © 2011 Pearson Education, Inc. What Do Americans Know About Science? • Almost 80 percent of adult Americans who were surveyed know that the continents are moving about the face of the Earth. • Of those surveyed, 25 percent think the sun goes around the Earth. © 2011 Pearson Education, Inc. What Is Science? © 2011 Pearson Education, Inc. What Is Science? • Science is a body of knowledge; a collection of unified insights about nature, the evidence for which is an array of facts. © 2011 Pearson Education, Inc. Science as a Body of Knowledge • The unified insights of science are known as theories. • A theory is a general set of principles, supported by evidence, that explains some aspect of nature. © 2011 Pearson Education, Inc. Science as a Body of Knowledge • Science can also be defined as a way of learning; a process of coming to understand the natural world through observation and the testing of hypotheses. © 2011 Pearson Education, Inc. Science as a Body of Knowledge © 2011 Pearson Education, Inc. Figure 1.3 Science as a Body of Knowledge • Science works through the scientific method, in which an observation leads to the

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