An example of a biogenic sedimentary structure is ____
a. concretion
b. trace fossil
c. organic formation
d. lagoon
e. pelagic ooze
b
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Can you see the northwest end of the runway at Sea Ranch Airport (a point just south of the profile) from the summit? Explain.
A second example of a vertical profile is in Figure 23.6. Using the same procedure as you did on the previous assignment, construct a topographic profile. Label the South Fork of the Gualala River (see Figure 23.4, Step 3), the bench mark at 112 feet, and various road crossings on your profile. The coastline forms a contour line of equal elevation—sea level. Note the change in contour interval and scale from that of Figure 23.5. Use Figure 23.6 to answer further questions about preparing a topographic profile.
Since the year 2000, developing countries have managed to prevent all of their untreated sewage from going directly into rivers that also supply drinking water
Indicate whether the statement is true or false.
Sediments that are found on the continental slope, continental rise, and the deep-ocean floor are called ____
A) pelagic sediments B) hydrogenous sediments C) evaporites D) neritic sediments
How does Earth as a planet compare to an orbiting space station in terms of providing a life support system for its inhabitants? Other than size, what are some of their differences and similarities in terms of habitation?