Environmental Science
The presence of high coliform counts in water indicates

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

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Environmental Science
The wind-chill factor:

Tells farmers when to protect crops from a freeze
Takes into account humidity and air temperature in expressing the current air temperature
Relates body heat loss with wind to an equivalent temperature with no wind
Determines how low the air temperature will be on any given day
Indicates the temperature at which water freezes on exposed skin

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