Environmental Science
Definition of ecosystem is

The abiotic component of a habitat
A community of organisms interacting with one another
The community of organisms together with the environment in which they live
The part of the earth and its atmosphere which inhibits living organisms

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

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