According to demographer Joel Cohen, the human carrying capacity
A) can be calculated in the same way it is determined for other animal species.
B) depends upon a standard of living.
C) can clearly be determined.
D) largely depends upon the availability of freshwater.
Question 2
As a result of measures to control acid-deposition in North America, over the last 20 years emissions of sulfur dioxide have been
A) steady, with little decrease in acid-deposition due to rising levels of nitrogen oxides.
B) reduced by about 10, at great cost to the power producing industry.
C) reduced to target levels at about the projected cost of compliance.
D) reduced beyond target levels and at only a fraction of the industry-projected compliance costs.
Parts of human nervous system
Human reproduction
A human pedigree of the X-linked color-blindness trait
Vestibular apparatus inside a human ear
The human brain