Environmental Engineering Reference
In-Depth Information
74.
Which of the following is an example of a detritivore?
A.
Mushroom
B.
Bacteria
C.
Squirrel
D.
Millipede
E.
Ladybug
75.
How can asbestos be harmful to humans?
A.
Asbestos binds to hemoglobin and blocks oxygen from binding, preventing oxygen from circulat-
ing in the blood.
B.
Asbestos acts as an endocrine disruptor.
C.
Asbestos lodges in the lining of the lungs, provoking the production of acid to destroy the invader,
but over time it can potentially lead to cancer.
D.
In its gaseous form, asbestos can be inhaled and ultimately cause cancer.
E.
Asbestos can be absorbed into the blood, potentially poisoning the body.
76.
In terms of matter, Earth is considered to be
A.
A closed system
B.
An open system
C.
A positive feedback loop
D.
In homeostasis.
E.
Unbalanced
77.
Anthropogenic sources of methane include
A.
Methane hydrates
B.
Wetlands
C.
Landfills
D.
Termites
E.
Wildfires
78.
Mercury enters the aquatic food web mainly through
A.
The processes of bio-accumulation and bio-magnification
B.
Deposition from atmospheric sources
C.
Decomposition of organisms
D.
Ocean dumping
E.
Fertilizer and pesticide runoff
79.
During which step in the sewage treatment process are suspended solids removed?
A.
Pretreatment
B.
Primary treatment
C.
Secondary treatment
D.
Tertiary treatment
E.
Final treatment
80.
Potential threats to biodiversity as a result of climate change include all the following EXCEPT:
