BIO 107 UNIT 11 EXAM QUESTIONS
AND ANSWERS
Approximately ________% of all U.S. residents are served by curbside recycling
programs, and the part of the U.S. waste stream that is recycled is currently about
________ %. - Answer-50; 25
The current state of e-wastes is that ________. - Answer-although recycling is
improved, the rate of e-wastes going into landfills and incinerators is rising
Living on a fault line that is prone to earthquakes is an example of a _______ hazard. -
Answer-physical
A type of toxicant that can cause cancer is termed _______. - Answer-a carcinogen
How is it that even pristine areas, undisturbed by humans, have been contaminated with
human-generated toxicants? - Answer-The toxicants are carried by the wind.
A _______ LD50 indicates low toxicity while a _______ LD50 indicates high toxicity. -
Answer-high; low
Which dose-response curve indicates a complex response to toxicants, such as those
associated with endocrine disrupters? - Answer-unconventional dose-response curve
_______ is (are) the quantitative description of the likelihood of a given outcome. -
Answer-Probability
Risk _______ include(s) decisions and strategies that will minimize risk. - Answer-
management
When we reduce the amount of waste entering the waste stream, it is called
__________. - Answer-source reduction
The average American produces how much trash per day? - Answer-4.3 pounds
In order to prevent contamination of groundwater, landfills must __________. - Answer-
be at least 6 meters above the water table
A materials recovery facility (MRF) is responsible for __________. - Answer-recycling
materials
AND ANSWERS
Approximately ________% of all U.S. residents are served by curbside recycling
programs, and the part of the U.S. waste stream that is recycled is currently about
________ %. - Answer-50; 25
The current state of e-wastes is that ________. - Answer-although recycling is
improved, the rate of e-wastes going into landfills and incinerators is rising
Living on a fault line that is prone to earthquakes is an example of a _______ hazard. -
Answer-physical
A type of toxicant that can cause cancer is termed _______. - Answer-a carcinogen
How is it that even pristine areas, undisturbed by humans, have been contaminated with
human-generated toxicants? - Answer-The toxicants are carried by the wind.
A _______ LD50 indicates low toxicity while a _______ LD50 indicates high toxicity. -
Answer-high; low
Which dose-response curve indicates a complex response to toxicants, such as those
associated with endocrine disrupters? - Answer-unconventional dose-response curve
_______ is (are) the quantitative description of the likelihood of a given outcome. -
Answer-Probability
Risk _______ include(s) decisions and strategies that will minimize risk. - Answer-
management
When we reduce the amount of waste entering the waste stream, it is called
__________. - Answer-source reduction
The average American produces how much trash per day? - Answer-4.3 pounds
In order to prevent contamination of groundwater, landfills must __________. - Answer-
be at least 6 meters above the water table
A materials recovery facility (MRF) is responsible for __________. - Answer-recycling
materials
