The major causes of desertification are overgrazing and trampling of soil by livestock. Indicate whether the statement is true or false
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Which area is most likely to contain brackish water?
a. sandy beach b. estuary c. deep ocean d. surface open ocean e. coral reef
At 10°C, which is more concentrated—a saturated solution of sodium nitrate, NaNO3, or a saturated solution of sodium chloride? (See figure shown above )
A) At 20°C a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl. B) At 10°C a saturated solution of sodium chloride, NaCl, is more concentrated than a saturated solution of sodium nitrate, NaNO3 C) At 10°C a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl. D) At 25°C a saturated solution of sodium nitrate, NaNO3, is more concentrated than a saturated solution of sodium chloride, NaCl.
If, in a partially mixed estuary, the seaward flow is 15 units per day and the river input is 11 units per day the net saltwater flow is ________ units per day.
A. 4 B. 8 C. 15 D. 26 E. 11
In the law of ________, Steno stated that in an undeformed sequence of sedimentary rock layers, each sedimentary rock layer is younger than the bed beneath it, but older than the bed above it.
A. ages B. original horizontality C. cosines D. original continuity E. superposition