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ENVIRONMENTAL
SCIENCE
CHAPTER 1
PROBLEMS FALL INTO THREE
CATEGORIES
 1. RESOURCE DEPLETION
 2. POLLUTION
 3. EXTINCTION
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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
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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
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POLLUTION
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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
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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
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GLOBAL PERSPECTIVE
Many environmental problems are linked
to overpopulation.
 Population crisis can lead to a
consumption crisis. (food, fuel, ect)
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Population and Consumption
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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
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USING SCIENCE TO SOLVE
PROBLEMS WITH THE
ENVIRONMENT
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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
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VALUE