Selected answer 43 million correct answer 43 million

Selected
Answer:
4.3
million
Correct
Answer:
4.3
million
 Question 25
3 out of 3 points
What is the main source for Sulfur dioxide in the atmosphere?
 Question 26
3 out of 3 points
What is the main source for Nitrogen oxides (NOx) in the atmosphere?
 Question 27
3 out of 3 points
Atmospheric (air) pollutants impact the respiratory system (lungs, bronchii) of
animals more than other systems in the body.
 Question 28
0 out of 3 points

Coal-burning industries emit soot and sulfurous compounds that can lead to acid
rain.
 Question 29
3 out of 3 points
Poor indoor air quality due to burning of unvented heating and cooking fires is
dangerous for children under 5, and accounts for more than half of the cases of
_________, a common disease in children of this age.
 Question 30
3 out of 3 points
Around the world, ________ people rely on burning wood, coal or dried animal dung
in open pits, stoves or fireplaces to heat their homes and cook.
 Question 31
3 out of 3 points
Which room in your house is most likely to have mold, an indoor air pollutant that
can trigger asthma attacks and allergic reactions?
 Question 32
3 out of 3 points

Match the following soil/groundwater remediation techniques with their description.
Question Correct Match Selected Match
air stripping
D.
bubble air up through a column
as contaminated water trickles
down the column, to remove
VOCs
D.
bubble air up through a column
as contaminated water trickles
down the column, to remove
VOCs
capping
B.
cover the land surface to
prevent infiltrating water that
may cause further migration of
soil/groundwater contaminants
B.
cover the land surface to
prevent infiltrating water that
may cause further migration of
soil/groundwater contaminants
bioremediat
ion
A.
uses microbes in the soil to
decompose (or degrade) soil
and groundwater contaminants
A.
uses microbes in the soil to
decompose (or degrade) soil
and groundwater contaminants
pump-and-
treat
C.
use a pumping well to extract
contaminated groundwater for
treatment at the surface, and
then reinject the clean water
C.
use a pumping well to extract
contaminated groundwater for
treatment at the surface, and
then reinject the clean water
 Question 33
3 out of 3 points
The National Priorities List that was established as part of CERCLA is a list of
______________.