A large flood in a river may cause abrupt shifts leading to the carving of a new channel. The point at which this change occurs is a(n) ________
A) input B) threshold
C) type of dynamic equilibrium condition D) type of metastable equilibrium
B
Environmental & Atmospheric Sciences
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Using the examples of Tehran and Los Angeles, discuss the special problems that vehicles create for urban outdoor air pollution
What will be an ideal response?
Environmental & Atmospheric Sciences
Pressurized fluid and chemicals injected into a well are used in a mining process called ________.
A. High pressure welling B. Heap-leach extraction C. Hydraulic fracturing D. Placer mining
Environmental & Atmospheric Sciences
Which tree species is most widely used for the purpose of making paper?
A) maple B) cedar C) pine D) redwood E) ash
Environmental & Atmospheric Sciences
Which mesothermal climate type lies poleward from Mediterranean climates?
a. savanna b. marine west coast c. humid continental, mild summer d. steppe e. desert
Environmental & Atmospheric Sciences