What Typically Happens to Estuaries When Surface Waters Are Overdrawn

question 7

Multiple Choice

What typically happens to estuaries when surface waters are overdrawn?

• A)They dry up.
• B)They become less salty.
• C)They become saltier.
• D)They can no longer be used for drinking water or for irrigation.

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Definitions:

Upper and Lower Control Limits

The thresholds in control charts within which a process is considered to be in control and stable, with the Upper Control Limit being the maximum acceptable limit and the Lower Control Limit the minimum.

Assignable Cause Variation

Variation in a process that is caused by specific, identifiable factors, as opposed to random variation.

Special Cause Variation

Variation in a process that is caused by specific circumstance, which is non-random and can usually be identified and eliminated.

Random Variation

The unpredictability in the outcome of a process, experiment, or measurement due to chance.