The primary cause of soil erosion is ________
A) no-till agriculture
B) crop rotation
C) strip cropping
D) use of crop cover
E) over cultivation
E
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As surface water travels from land and merges with water in a stream, it becomes____________________
Fill in the blanks with correct word
Qualitatively, what happens to the hydronium ion concentration if you increase the hydroxide ion concentration?
A) The concentration of H3O+ stays the same but the ratio changes. B) The concentration of H3O+ increases but the ratio stays the same. C) The concentration of H3O+ increases to neutralize the excess hydroxide. D) none of the above
The smallest natural lump or cluster of soil particles is known as a
A) ped. B) separate. C) horizon. D) profile.
Why are lakes like the Dead Sea and Great Salt Lake so buoyant?
a) The water is brackish; it has a high amount of dissolved solids, making it extremely dense and buoyant. b) The water is hypersaline; it has a high amount of dissolved solids, making it extremely dense and buoyant. c) Salt water meets freshwater at these lakes, making them extremely buoyant. d) The water has very little dissolved chloride, so the water is very buoyant. e) None of the above