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The natural world
Surroundings inhabited by persons, animals and plants |
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| Application of scientific knowledge for practical purposes |
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| Substance that contaminates air, water or soil |
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| Introduction of contaminants |
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Gaseous compounds that absorb infrared radiation and then emit that energy as heat
Examples:
Carbon dioxide CO2
Methane CH4 |
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| Clearing or thinning of forests by humans |
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| Uses internal combustion engine, which runs on gas, and electric motor |
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| Process of removing salt from seawater |
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| Artificial body placed in orbit around Earth to collect information and relay communication |
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| A biological community of interacting organisms and their physical environment |
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From the Greek “photo” meaning “light”
From the Greek “syn” meaning “together”
Process by which green plants use sunlight to synthesize foods from carbon dioxide and water |
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| Substance added to soil to increase nutrients and help plants grow |
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Water held underground in soil or in pores in rock
More than 50% of drinking water comes from groundwater sources |
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| Colorless gas which forms a layer of protection against cancer causing UV radiation in the stratosphere and is main component of smog at ground level |
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| Second layer of Earth’s atmosphere extending from 6.2 miles above Earth’s surface to 31 miles above Earth’s surface |
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Electromagnetic waves with high energy, high frequency and short wavelengths
Between x-rays and visible light (10nm to 400 nm wavelengths)
Can cause skin cancer |
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Fog combines with smoke and atmospheric pollutants
Unhealthy, respiratory irritant |
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| chlorofluorocarbons (CFCs) |
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Definition
“chloro” references chlorine
“fluoro” reference fluorine
Class of gaseous compounds containing carbon, chlorine and fluorine
Used as propellants and refrigerants until the 1980s and 1990s |
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Compressed inert gas to dispense the contents of an aerosol container
Examples: whipped cream, hairspray, spray paint |
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| Chemical used in cooling mechanisms like air conditioners and refrigerators |
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Level of performance that uses the lowest amount of input to create the greatest amount of outputs
To accomplish a task with the least waste of time, energy and resources |
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| Converting waste into reusable material |
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| Place to dispose of trash by burying it |
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| environmental remediation |
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Definition
Like the word “remedy” from the Latin meaning “heal” or “cure”
Removing dangerous substances from the environment
Repairing environmental damage |
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