Which of the following will give a positive test with Tollens' reagent?
A) aldehydes
B) ketones
C) both a and b
D) neither a nor b
A
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Which of the following inversions are more extensive and meteorologically important?
A) radiation inversion B) frontal inversion C) subsidence inversions D) none of the above
What happens to tropical soils when the rainforest is cleared?
a. The soil improves in that soluble nutrients are no longer depleted by the trees. b. There is little effect on the soil because of its depth of richness. c. Clearing interrupts the critical nutrient cycle and leads to soil leaching. d. The soils stabilize and become excellent for grain crops.
____________________ is the process of iceberg formation
Fill in the blank(s) with correct word
Carl and Don run separate chemical fertilizer manufacturing companies in the same industrial park. Both pollute the river flowing through the industrial park with debris and waste from their manufacturing processes. In the table below, the first row shows the current level of debris and waste each produces that makes its way into the river. The information in the table also indicates how much it would cost each manufacturer to reduce its pollution by additional increments of 10 pounds. If the government imposes a pollution tax of $7 for each 10 pounds of debris, total pollution will fall by ____ pounds, at a total cost of ____.
A. 40; $28 B. 40; $17 C. 40; $22 D. 60; $30