Which of the following is the Environmentalist's Paradox?
A) As human population decreases, ecosystem health also decreases.
B) As human material and economic prosperity increases, ecosystem health decreases.
C) The more non-renewable resources we use, the more new resources we discover.
D) As biodiversity decreases, ecosystem health increases.
Question 2
The crisis in controlling bedbugs has encountered difficulties because
A) bedbugs are vectors for serious human diseases and require powerful chemical pesticides.
B) home applications of effective pesticides can endanger children.
C) the only way to get any control is to burn infested bedding.
D) bedbugs are internal parasites that require long doses of antibiotics to eliminate.
Basic energy of a human life
24 weeks old human fetus
skeleton of the human body
Projected Ethnic Changes in U.S. Population to 2050
The visual areas of the human cerebral cortex.
Population Distribution