What is a major source of nitrate to coastal waters?
a. excretion
b. soil runoff
c. urea
d. nitrifying bacteria
e. atmospheric deposition
b
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The sail-like fin on the pelycosaur may have served as all but which of the following?
a. sexual display b. a means of locomotion c. a means of protection d. a means of defense e. a thermoregulatory device
Which of the following is true of acetate salts and nitrate salts?
A) All acetate salts are soluble but all nitrate salts are insoluble. B) All nitrate salts are soluble but all acetate salts are insoluble. C) All acetate salts and all nitrate salts are soluble. D) All acetate salts and all nitrate salts are insoluble.
Formation of evaporites acts to add salts to seawater.
Answer the following statement true (T) or false (F)
During the summer thaw season in periglacial regions, the mass movement of soil regolith downslope is called
A) slump. B) gelifluction. C) fall. D) slide. E) mudflow.