Environmental Science
The presence of high coliform counts in water indicates

hydrocrbon contamination
phosphorus contamination
contamination by human wastes
decreased Biological Oxygen Demand

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Environmental Science
The primary cause of a radiation inversion is:

Solar radiation absorbed by the earth's surface
Infrared radiation absorbed by the earth's surface
Solar radiation reflected by the earth's surface
Infrared radiation emitted by the earth's surface
Infrared radiation absorbed by the atmosphere and clouds

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