____________________ are functions of nature, such as purification of air and water, that support life and human economies
Fill in the blanks with correct word
Natural services
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Analyze the table below that shows USGS data for earthquake zones in Alaska and use it to answer this question. 
What is the trend when comparing slip rate to recurrence interval?
A. There is no obvious slip-rate, recurrence relationship. B. The larger the slip rate the smaller the recurrence interval. C. The larger the slip rate the larger the recurrence interval.
All of the following are effective for reducing flood hazards except
A. channelization. B. construction of artificial levees. C. filling stream channels with excessive sediment. D. construction of dams.
Areas between 25° to 35° latitude usually become ________ because this area is dominated by air that is sinking and being ________
A) deserts; cooled by expansion B) deserts; heated by compression C) rain forests; cooled by expansion D) rain forests; heated by compression
The analog method is often referred to as ____________________
Fill in the blank with correct word.