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EHST 2110 Final Exam Questions and Answers 100% Accurate
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EHST 2110 Final Exam Questions and Answers 100% AccurateEHST 2110 Final Exam Questions and Answers 100% AccurateEHST 2110 Final Exam Questions and Answers 100% Accurate Sewage treatment plants and industrial discharges are - ANSWER - categories of point source water pollution Which waterborne d...

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  • August 13, 2024
  • 9
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • ehst 2110 final exam questions and answers 100 ac
  • ehst 2110 final exam questions and answers stuvia
  • sewage treatment plants and industrial discharges

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EHST 2110 Final Exam Questions and
Answers 100% Accurate
Sewage treatment plants and industrial discharges are - ANSWER - categories of point source
water pollution


Which waterborne disease caused by a protozoan present in the intestinal tract of both human
and wild animals, may occur among campers in wilderness areas who unwittingly swallow
pathogenic cysts when they drink unfiltered water from mountain streams? - ANSWER -
Giardiasis


What contaminant in drinking water is regulated because of its potential to cause "blue baby
disease"? - ANSWER - Nitrates


Allowing water to run for several minutes before drinking or cooking is the recommendation if
you suspect ____ in your water. - ANSWER - lead


Of the various changes occurring in a lake as it undergoes eutrophication, which is mostly
directly responsible for the loss of high-quality fish? - ANSWER - depletion of dissolve oxygen


Primary treatment consists of - ANSWER - screening and sedimentation


Implementing improved land management practices represents the best strategy for control of -
ANSWER - non point source pollutants


Reports reveal that millions of Americans are exposed to lead in their drinking water. What is the
source of the toxic contaminant? - ANSWER - leaching of lead from lead pipes in home
plumbing system


What is the purpose of chlorinating sewage effluent and drinking water? - ANSWER - to kill
disease-causing organisms

, When treated wastewater is used for drinking, irrigation or recreation - ANSWER - advanced
treatment is required


5 categories of non point source pollution - ANSWER - acid mine drainage, acid rain,
agricultural run off, urban street runoff, construction activities


How do nitrates get into lakes, ponds and rivers? - ANSWER - Agricultural run off (fertilizers on
farms run off because of storm water)


When water is polluted with organic material which will use up the dissolved oxygen as it
decomposes that particular water sample is measured as having - ANSWER - high BOD


Which of the following waterborne pathogens is the most resistant to chlorination? - ANSWER -
crypto


What do most researchers see as the solution to eliminating the "dead zone" in the Gulf of
Mexico? - ANSWER - sharply reducing fertilizer runoff from agricultural lands in the upper
Midwest


What is the purpose of the sedimentation tank? - ANSWER - allows materials to settle out and
the solids fall to the bottom


The Clean Water Act's Part 503 deals with what - ANSWER - sewage sludge


Environmental concerns with Acid Rain - ANSWER - destruction of statues; lowering the pH of
soil


What is a possible reason for "fish kills" - ANSWER - hypoxia


The aim of sewage treatment is to - ANSWER - improve the quality of effluent to the point that it
can be returned to the waterway without harming aquatic life or endangering the public health


Where is the debris from the grit tank and bar screen disposed of? - ANSWER - landfills

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