Answers5120VB Environmental Science Sem B- BSkills Lesson: Proposing Logical Alternatives

Water Pollution Answers

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Which of the following factors determines how harmful an introduced chemical will be on the environment?

A
type of chemical
B
concentration
C
weather conditions
D
all of the above
23

Which of the following is the most serious effect of water pollution for humans?

A
infectious diseases
B
algal blooms
C
toxic food chain effects
D
low-oxygen water
24

To be considered a source of water pollution, the source must include a chemical. Please select the best answer from the choices provided

A
T
B
F
26

How does de-icing roads with salt negatively impact the environment?

A
The road salt attracts deer that are then hit by motor vehicles.
B
It removes necessary salt from the local water courses.
C
The high salinity of the surface runoff is harmful to freshwater ecosystems.
D
The salt harbors salt eating bacteria that are toxic to animals.

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