Use this stream-related diagram to answer the following questions.
Where is the highest gradient?
A. Point A
B. Point B
C. Point C
Answer: A
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Shield volcanoes commonly have
A) fissure eruptions. B) lava flows. C) fire fountains. D) dikes at depth. E) All of these are correct.
Small, single-celled autotrophs covered with disks of calcium carbonate fixed to the outside of their cell walls are
____________. Fill in the blank(s) with the appropriate word(s).
Tsunamis are caused by ________
A) abnormally high and sustained winds B) boiling water entering the oceans from undersea faults C) displacement of sea water by volcanoes, earthquakes or coastal landslides D) abrupt changes in temperature of seawater E) global climate change
In all soil orders, the surface layer is the ________
A) epipedon B) solum C) bedrock D) cation E) hard pan