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1	The air pollution created by the 9/11 disaster was comprised of:
	A)	ash
	B)	glass
	C)	toxic gases
	D)	all of the above
2	Based upon their computer modeling data, the scientists suggest that:
	A)	an index value assessing exposure risk can be determined for individuals based upon where they were living at the time of the disaster for up to 1 month after the event
	B)	communities southwest of the World Trade Center had the highest levels of exposure
	C)	such modeling could be utilized to determine civilian exposure in the case of the release of an airborne chemical or biological weapon
	D)	a and c
	E)	all of the above
3	Individuals living within close proximity to the disaster site have developed symptoms of:
	A)	congestive heart failure
	B)	liver disease
	C)	asthma
	D)	all of the above