(B) chemical contaminants from indoor sources
(C) chemical contaminants from outdoor sources
(D) biological contaminants
(E) inadequate ventilation- Which of the following statements is FALSE?
(A) Evidence exists of a dose-response relationship between nonmelanoma
skin cancer and cumulative exposure to UVB radiation.
(B) Individuals, usually those living in areas with limited sunlight and long,
dark winters, may suffer severe photo allergies to the UVB in sunlight.
(C) Increased absorption of UVB triggers a thickening of the superficial
skin layers and an increase in skin pigmentation.
(D) There is a relationship between skin cancer prevalence and increases in
ultraviolet radiation due to the depletion of tropospheric ozone.
(E) Acute exposure to UVB causes sunburn, and chronic exposure results in
the loss of elasticity and increased skin aging.- Of the choices listed below, which constitutes the greatest percent of
global freshwater use?
(A) Domestic use other than drinking (cooking, flushing toilets, showering,
etc.) (B) Use in energy production
(C) Agriculture
(D) Industry
(E) DrinkingSECTION II (FREE-RESPONSE QUESTIONS)
Time: 90 minutes
4 questions
40% of total grade
No calculators allowed
Directions: Answer all four questions, which are weighted equally. The