Episodes of coral bleaching have become more frequent and more severe in the last 20 years.
Answer the following statement true (T) or false (F)
True
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The Indian subcontinent was originally attached to _______.
a - Sima b - Gondwanaland c - Tasmania d - Laurasia e - Sial
Drip irrigation systems are
A) less efficient than traditional flood or center-pivot systems. B) cheaper, compared to traditional flood or center-pivot systems. C) producing greater crop yields. D) used for most irrigation of crops in the United States.
Which of the following statements is TRUE of lake-effect snowfall?
A) Lake-effect snowfall accounts for only a small portion of seasonal snowfall along the eastern edges of the Great Lakes. B) Lake-effect events are produced through the modification of mP air masses. C) Along the Great Lakes, lake-effect snowfall usually only occurs within 80 km of the leeward lake shores. D) Lake-effect events are not capable of generating more than a centimeter or two of snow.
The principle that can be used to determine the relative age of an igneous intrusion called a dike is the principle of
A. superposition. B. unconformities. C. cross-cutting relations. D. original horizontality.