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ENVIRONMENTAL SCIENCE CHAPTER 1 PROBLEMS FALL INTO THREE CATEGORIES 1. RESOURCE DEPLETION 2. POLLUTION 3. EXTINCTION MAIN ENVIRONMENTAL PROBLEMS NATURAL RESOURCE- SUBSTANCE USED BY ORGANISMS THAT OCCURS NATURALLY. SUNLIGHT, AIR, WATER, SOIL, MINERALS, PLANTS, ANIMALS, FORESTS, AND FOSSIL FUELS A RESOURCE IS DEPLETED WHEN A LARGE PORTION IS USED UP. NONRENEWABLE VS. RENEWABLE RESOURCE DEPLETION THE INTRODUCTION OF HARMFUL LEVELS OF CHEMICALS OR WASTE INTO THE ENVIRONMENT. NITROUS OXIDES, HEAT, NOISE, PESTICIDES, ECT. AIR, WATER, SOIL PRIMARY VS SECONDARY POLLUTION THOUSANDS OF SPECIES ARE LOST EACH YEAR. MANY ARE NEVER NAMED BY SCIENCE. OCCURRED THOUGHOUT HISTORY (DINOSAURS) EXTINCTION IS OCCURRING FASTER TODAY THAN ANY OTHER TIME IN HISTORY. PRIMARILY FROM LOSS OF HABITAT. EXTINCTION ENVIRONMENTS ARE INTERCONNECTED. EX. POLLUTION IN MID-WEST FALLS AS ACID RAIN IN CANADA. CFCS DESTROY THE OZONE LAYER. BIOSPHERE- THIN LAYER OF LIFE THAT SURROUNDS THE EARTH. 8km high and 8km deep From highest mountains to deepest oceans GLOBAL PERSPECTIVE Developed countries vs. Developing countries. Developed – U.S., Japan, England Developing – African, South American GLOBAL PERSPECTIVE Many environmental problems are linked to overpopulation. Population crisis can lead to a consumption crisis. (food, fuel, ect) Population and Consumption Human populations can exist indefinately in a sustainable world. SUSTAINABLE WORLD PURE SCIENCE – ANSWERS QUESTIONS ABOUT HOW THE NATURAL WORLD WORKS. APPLIED SCIENCE = USES INFORMATION FROM PURE SCIENCE TO SOLVE PROBLEMS WITH THE ENVIRONMENT USING SCIENCE TO SOLVE PROBLEMS WITH THE ENVIRONMENT OBSERVING HYPOTHESIZING PREDICTING EXPERIMENTING INTERPRETING DATA DRAWING CONCLUSIONS REPORTING FINDINGS SCIENTIFIC METHODS AESTHETIC – BEAUTIFUL OR PLEASING ECONOMIC – GAIN OR LOSS OF MONEY ENVIRONMENTAL – PROTECTION OF RESOURCES EDUCATIONAL – ACQUIRE AND USE KNOWLEDGE ETHICAL – RIGHT OR WRONG HEALTH – MAINTAIN HEALTH AND PREVENT SICKNESS RECREATIONAL – HUMAN ACTIVITIES SCIENTIFIC – INCREASING UNDERSTANDING OF NATURAL WORLD SOCIAL/CULTURAL - TRADITIONS VALUE