Define El Niño and Southern Oscillation and explain how they combine to affect weather in North America
What will be an ideal response?
Answer: An El Niño develops when the trade winds weaken or even reverse and flow eastward. The warm water normally found in the western Pacific gradually "sloshes" eastward as a slowly moving wave, in part due to the higher sea level, and eventually makes its way to the coast of North and South America. The eastern Pacific warms, upwelling weakens, and the warm surface layer deepens both there and throughout the tropical Pacific basin. The change in sea-surface conditions linked with the change in the atmospheric pressure distribution is called the Southern Oscillation. The El Niño and Southern Oscillation are closely intertwined, and atmospheric scientists refer to their combined occurrences as ENSO events.
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A) cattle outcompeting natural herbivores B) spreading nonnative species C) contaminating streams with cattle wastes D) promoting erosion and loss of rooted plant cover
Assume that this foliated rock is oriented so that north is at the top of the image. From which compass directions is the greatest differential stress coming?
A) North and south B) North and east C) South and west D) West and east
Climate-feedback mechanisms ________
A) enhance climate models B) support climate models C) complicate climate models D) have nothing to do with climate models E) disagree with climate models
Of the following, ________ represent criteria for classifying hazardous waste.
A. ignitable, corrosive, reactive, toxic B. municipal, industrial and agricultural C. non-biodegradable and biodegradable D. inorganic and organic E. solid, liquid, gaseous