Footnote
a CFCs have been widely used in aerosol sprays, refrigeration, air-conditioning units, cleaning agents, and the manufacture of foam insulation. See Awake! of December 22, 1994, “When Our Atmosphere Is Damaged.”
a CFCs have been widely used in aerosol sprays, refrigeration, air-conditioning units, cleaning agents, and the manufacture of foam insulation. See Awake! of December 22, 1994, “When Our Atmosphere Is Damaged.”