An advantage of taxing wages and profits less,and taxing pollution and waste more,would be the improvement of environmental quality through full-cost pricing.

Which of the following features is NOT formed by precipitation of calcite from water?

A) travertine
B) stalagmite
C) stalactite
D) sinkhole
E) flowstone

What type of population change would you expect to occur for monkeys in an undisturbed section of the Brazilian rain forest? 

A)  cyclic 
B)  stable 
C)  explosive 
D)  irruptive

Which pair of terms applies to changes such as depletion of underground aquifers and water logging of irrigated soils? 

A)  natural and gradual 
B)  human caused and catastrophic 
C)  human caused and gradual 
D)  natural and catastrophic