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
Suppose yesterday morning you noticed ice crystals (frost) on the grass, yet the minimum temperature reported in the newspaper was only 35o F. The most likely reason for this apparent discrepancy is that:

The newspaper reported the wrong temperature
The thermometer was read before the minimum temperature was reached for that day
The thermometer was in error
Temperature readings are taken in instrument shelters more than 5 feet above the ground
The thermometer was read incorrectly

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