The world population growth rate is currently close to ________%
A) 1.2
B) 2.5
C) 5
D) 10 E) 20
A
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Accumulations of shifting sand are
A) cirques. B) horns. C) spurs. D) dunes.
Given the three molecules 1-methylcyclohexanol, trans-2-methylcyclohexanol, and trans-4-methylcyclohexanol, which of the following statements is true?
A) All three molecules are chiral. B) Only 1-methylcyclohexanol and trans-2-methylcyclohexanol are chiral. C) Only trans-2-methylcyclohexanol is chiral. D) Only trans-2-methylcyclohexanol and trans-4-methylcyclohexanol are chiral.
Cultural eutrophication cannot be prevented by ____.
A. banning the use of phosphate detergents B. preventing runoff of fertilizer from agricultural fields C. advanced waste treatment D. harvesting excess weeds E. soil conservation and land-use controls
The first law of thermodynamics states that ____
a. energy can only be released from a system through the process of oxidation b. energy can be created, destroyed, or change forms c. energy cannot be created or destroyed; it can only change forms d. energy stored in a biomass decreases with each successive trophic level e. energy stored in a biomass increases with each successive trophic level