The Alpine orogeny was caused by
a. the collision of the African plate with the Arabian Plate.
b. the collision of the African plate with the Australian plate.
c. the collision of Africa and Arabia with Eurasia.
d. the collision of India with Asia.
e. none of the above
C
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The Great Pacific Garbage Patch (or Eastern Garbage Patch) is a region of the Pacific Ocean northeast of Hawaii where high concentrations of marine debris can be found
This debris includes easily visible large pieces of floating litter such as plastic bottles, along with vast quantities of easily-overlooked confetti-sized plastic particles suspended in the surface waters. The patch is estimated to be at least the size of Texas, with some estimates as great as the size of the continental United States. Several such patches exist in the various oceans across the globe. What is the most logical explanation for the existence of these patches? A) The rotation of the planet causes marine debris to be pulled toward the Equator, where most of these patches are found. B) There are several locations in the middle of the oceans where it is legal to dump wastes. C) The patches are found along shipping lanes where cruise ships illegally dispose of their garbage by throwing it overboard. D) Currents circulate plastics and other debris until they accumulate in areas where currents are more sluggish.
The optimum level of pollution control is reached when ____.
A. marginal costs of pollution control begin to exceed what the public will pay for control B. marginal costs of pollution begin to exceed the marginal costs of pollution control C. the marginal cost of pollution control intersects with the marginal cost of pollution D. demand for pollution clean-up exceeds the capacity to clean pollution E. technologies become affordable to clean up pollution
The term karst topography was first used in ________
A) India, near the southern foothills of the Himalayan Mountains B) eastern Canada in areas of fractured igneous and metamorphic rocks C) the Republic of Slovenia, a province of the former Yugoslavia D) Australia for the extremely dry interior area near Ayres Rock and Alice Springs
In which stage of the Demographic Transition are birthrate and death rate both low?
A) stage 1 B) stage 2 C) stage 3 D) stage 4 E) stages 1 and 4