On the ECG, an Osborne wave can be recognized as:
A) a negative deflection that produces a biphasic P wave.
B) acute widening of the QRS complex during the R wave.
C) an upward slurring at the beginning of the QRS complex.
D) a positive deflection immediately after the QRS complex.
Answer: D) a positive deflection immediately after the QRS complex.
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If a stream channel is of constant width and depth, how must increased discharge be accommodated?
A) greater sediment transport B) flooding C) increased velocity D) steeper channel slope
The pull factor that was a significant factor for African Americans to move south to north in the early to mid-twentieth century was
A) inexpensive housing. B) equality under the law. C) education opportunities. D) factory jobs with higher wages. E) inexpensive agriculture land.
The humid continental, mild summer climates are generally bordered by ____
a. tropical savanna climates on their equatorward sides b. subarctic climates on their poleward sides c. oceans on their western margins d. steppe climates on their eastern margins e. tropical rainforest climates on their equatorward sides
Desert stream channels called ________ are characterized by narrow canyons with vertical walls and flat, gravel-strewn floors.
A. dry streams B. intermittent channels C. stream beds D. desert streams E. arroyos