El Niño involves a ____
a. warming of ocean waters
b. cooling of the ocean waters
c. very cold current
d. very fast current
a
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How does mafic magma originate from ultramafic rock at a spreading ridge? What will be an ideal response?
The rainshadow on the mountain in the diagram would be in the area marked
A. From A to B B. From C to D C. At A and at D D. At A and at B E. From B to C
What is a tectonic plate?
A. the crust and underlying rigid mantle above the asthenosphere B. the crust and underlying plastic asthenosphere above the mantle C. the plastic asthenosphere above the rigid core and upper mantle
The first letter of the two-letter code used to identify air masses on weather maps is either m or c
a. True b. False Indicate whether the statement is true or false