var killers = new Array(
"1. Which of the following chemical substances are thought to contribute to climate change? $$(a) methane %%(b) carbon dioxide ^^(c)  ozone &&(d)  all of the Above  ",
"2. Tiny liquid droplets suspended in the air are called $$(a) aerosol particles %%(b) dew ^^(c)  ice crystals &&(d)  molecueles  ",
"3. The relationship between the air's pressure, density and temperature is called $$(a) the kinetic theory of gases %%(b)  the gas law ^^(c)  radioactivity decay &&(d)  the atomic model  ",
"4. The percentage of the sun's total solar radiation that reaches the earth's surface is roughly $$(a) 10% %%(b)  20% ^^(c)  50% &&(d)  90%  ",
"5.The sky appears blue because $$(a) the atmosphere does not scatter light very well %%(b) the atmosphere does not scatter blue light very readily ^^(c) C the atmosphere scatters blue light more readily than other colours &&(d) most visible light is blue  ",
"6. The greenhouse effect $$(a) helps the earth's surface to remain warmer than it would be if there were no atmosphere %%(b)  helps the sun's radiation to get reflected back to the space ^^(c)  C mainly involves latent heat released by the atmosphere &&(d) is primary caused by pollution ",
"7. The combination of cold temperatures and strong winds makes your body feel colder, because wind enhances the transfer of heat by $$(a) infrared radiation %%(b) ultraviolet radiation ^^(c)  latent heat &&(d)  conduction and convection  ",
"8. Which of the following are likely impacts of significant global warming? $$(a)  changes in frontal systems and storm tracks %%(b)  changes in sea level ^^(c) changes in plant and animal communities &&(d)  all of the Above  "
);

var answers = new Array('d','a','b','c','c','a','d','d' );