Consider Figure 1-4 from the text. The top line represents the 10-year average total losses.?
A UN researcher is interested in describing the expected cost of natural disasters over the next twenty years. Should the researcher focus on the information in the bar charts or the lines? Would it be appropriate for the researcher to use a linear model in their forecast? Explain your answer clearly in the context of the graph.
What will be an ideal response?
ANSWER: The researcher should use the 10-year average (indicated by the lines on the graph) to predict what will happen over the next ten years. Since the type and effect of natural disasters are unpredictable, the yearly losses are very variable. The 10-year average is a more accurate summary of what will happen over time.
The 10-year averages are increasing in a steady fashion that looks like small variations around a linear trend. A linear fit is appropriate.?
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What topographic features appear to be controlling the stream course of the north branch of the Potomac River (joins Wills Creek along the southeast portion of the map), and what are the names of the structural landscape controls?
What will be an ideal response?
The process by which the concentration of a pesticide increases through a food chain is called ________
A) biological concentration B) biomagnification C) bioaccumulation D) broad-spectrum effect E) pesticide treadmill effect
Currently Earth is ________ during the Northern Hemisphere winter.
A. at 16.5 degrees tilt B. at its average distance from the Sun C. closest to the Sun D. farthest from the Sun E. at 25.5 degrees tilt
Throughout time, continents break apart and collide and ocean basins open and close. This cyclical process is known as the ________.
A. Benioff cycle B. Richter cycle C. Wilson cycle D. lithospheric cycle E. Wegener cycle