Costs of pollution control tend to
A) decrease over time because of initial investments in reductions and new technologies.
B) decrease over time because regulations generally become less restrictive.
C) increase over time as levels of acceptable pollution become increasingly restrictive.
D) increase over time as new technologies require renewed investments.
Question 2
The benefit to cost ratio of replacing chlorofluorocarbons in new cars was
A) higher than predicted.
B) lower than predicted.
C) about what was predicted.
D) unpredictable because of fluctuating costs of the replacement gases.
Water potentials decrease (become more negative) as one moves from soil to plant to atmosphere
Primates in the New World tend to be small-bodied compared to those elsewhere.
The Old River Flood Control Structures
If you want to show differences between items at the same time, a bar graph is more effective than a
Vascular Distribution and Control of Circulation
Time-of-entry mapping