35. Which of the following statements is true?
A. Over 44 years passed from the first production of CFC's to the first awareness that they could cause environmental damage
B. CFC's are stable, odorless, nonflammable, nontoxic, and noncorrosive chemicals
C. CFC's are found in bubbles in styrofoam and insulation
D. CFC's are important because they help screen out ultraviolrt radiation from reaching Earths surface
E. CFC's remain in the troposphere because they are insoluble in water and chemically unreactive
2007-12-18 13:57:09 · 1 answers · asked by Tommey H 1 in Science & Mathematics ➔ Earth Sciences & Geology
A. both true and false. CFC's were recognized immediately as a suffocation hazard in low lying, confined areas because they are so dense they replace the air.
B. true, unless decomposed by high temperature or UVC radiation.
C. false
D. false
E. false. CFC's remain at ground level because they cannot diffuse upward.
2007-12-20 08:54:34 · answer #1 · answered by Helmut 7 · 0⤊ 0⤋