Read the following text carefully to do the next exercises
1. Read the text carefully
The Greenhouse Effect The atmosphere has a natural supply of greenhouse gases. They capture heat and keep the surface of the Earth warm enough for us to live on. Without the greenhouse effect, the planet would be an uninhabitable, frozen wasteland. Before the Industrial Revolution, the amount of carbon dioxide CO 2 and other greenhouse gases released into the atmosphere was in a rough balance with what could be stored on Earth. Natural emissions of heat-trapping gases matched what could be absorbed in natural sinks. For example, plants take in CO 2 when they grow in spring and summer, and release it back to the atmosphere when they decay and die in fall and winter. Industry took off in the mid-1700s, and people started emitting large amounts of greenhouse gases. Fossil fuels were burned more and more to run our cars, trucks, factories, planes and power plants, adding to the natural supply of greenhouse gases. The gases—which can stay in the atmosphere for at least fifty years and up to centuries—are building up beyond the Earths capacity to remove them and, in effect, creating an extra-thick heat blanket around the Earth. The result is that the globe has heated up by about one degree Fahrenheit over the past century—and it has heated up more intensely over the past two decades. If one degree doesnt sound like a lot, consider this: the difference in global average temperatures between modern times and the last ice age—when much of Canada and the northern U.S. were covered with thick ice sheets—was only about 9 degrees Fahrenheit. So in fact one degree is very significant—especially since the unnatural warming will continue as long as we keep putting extra greenhouse gases in the atmosphere.Parts
» Problem Formulation Problem Limitation
» Definition of Terms INTRODUCTION
» Yalden’s Instructional Design
» Materials Development Theoretical Descriptions
» ESP Methodology English for Specific Purposes ESP
» Needs Analysis English for Specific Purposes ESP
» Objectives of CBI Characteristics of CBI
» Principles of CBI The Role of Learners and Teachers
» Biology Subject at SMAN 3 Yogyakarta
» Theoretical Framework THEORETICAL REVIEW
» Research and Information Collecting
» Planning Developing Preliminary Form of Product
» Preliminary Field Testing Main product revision
» Questionnaire Sheet Research Instruments
» Data Gathering Technique METHODOLOGY
» Data Analysis Technique METHODOLOGY
» Reviewing the Literature Conducting the Needs Survey
» Describing the Purposes The Steps in Designing a Set of English Reading Materials for Biology
» Developing the Syllabus The Steps in Designing a Set of English Reading Materials for Biology
» Producing Proto-Syllabus The Steps in Designing a Set of English Reading Materials for Biology
» Producing Pedagogical Syllabus Developing and Implementing Classroom Procedures
» Developing the Materials The Steps in Designing a Set of English Reading Materials for Biology
» Evaluating the Designed Materials
» Revising the Designed Materials
» The Presentation of the Designed Materials
» Purpose Content CONCLUSIONS AND SUGGESTIONS
» Basic Competences Learning Indicators
» Lesson Identity Standard of Competence Basic Competences Learning Indicators
» Grammar Battle Completing Mission
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