Some plants undergo accelerated growth and enhanced photosynthesis in an environment rich in carbon dioxide. This
A) promotes warming.
B) is a negative feedback.
C) is a positive feedback.
Answer: B
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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.
Use the map to answer this question.
Which air masses will contain the warmest air?
A. B and D B. E and A C. C and D D. B and C E. A and C
In a chemical reaction,
A) atoms are destroyed. B) atoms are rearranged to form different kinds of matter. C) new atoms are formed. D) new elements are formed.
What depositional feature is visible here?
A) Braided channel B) Terrace C) Incised meanders D) Delta