In most ecosystems, the original source of energy for the living things in the system is _____.
A) the heterotroph
B) glucose
C) the primary producer
D) the sun
Ans: D) the sun
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The straight blue lines are artificial channels being used to drain swampy areas. Suggest one explanation of the formation of these swamps.
The question is based on Map T-11, the “Whitewater, Wisconsin” quadrangle (scale 1:62,500; contour interval 20 feet; dotted lines represent 10-foot contours), and Map T-27b, a shaded-relief map showing a portion of this area in greater detail. The irregular high ground of “Kettle Moraine State Forest,” running diagonally from the lower left to the right center of the map, is a terminal moraine left by a Pleistocene ice sheet 142°51'34"N, 88°35'59"W). The region northwest of the terminal moraine was once covered by the ice. The region in the southeast corner of the map is the edge of the glacial outwash plain. What will be an ideal response?
Which principle states that fossil assemblages succeed one another through time in a regular and predictable order?
A)The principle of cross-cutting relationships B)The principle of inclusions C)The principle of fossil succession D)The principle of uniformitarianism E)The principle of superposition
Which of the following countries is NOT a member of the Eurozone (countries using the Euro currency)?
a. Iceland b. Switzerland c. Norway d. Sweden e. none of these countries use the Euro as their official currency
Which of these statements is supported by the graph? Select all that apply.
- The nations of the Middle East show the largest range in both happy life years and ecological footprint. - Citizens of Sub-Saharan Africa tend to have few happy life years as well as a low ecological footprint. - Citizens of the Western world tend to have many happy life years as well as a large ecological footprint. - Resource consumption in developed nations has increased over time. - The larger a nation's ecological footprint, the more happy life years its citizens will have.