Although the Appalachian Mountains formed during the Paleozoic Era, the present topographic features are a result of
Cenozoic geologic activity.
a. True
b. False
True
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Three other specific spot elevations are noted with an “x.” What are their elevations?
Use Figure 23.3 to do the following work and answer the question.
What will be an ideal response?
A projectile launched at 20° above the horizontal lands downrange. Without air resistance, what other projection angle for the same speed would produce the same downrange distance?
A. 45° B. 60° C. 30° D. 70°
Estuaries and their productive saltmarsh habitats serve as nurseries for many species. Being a nursery means that
1.this is where most marine animals are born.
2.animals can live there during both high and low tides.
3.larvae and juveniles of marine species find shelter, feed, and grow rapidly there.
4.this is where infant mortality rate is lowest.
How are oil sands extracted?
a. By strip mining b. By drilling c. By burning d. By mountaintop removal