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3 votes
3 votes
Air pollution in US National Parks is effecting the environment in what way(s)?

a.
plant damage from ozone exposure
b.
high levels of mercury found in endangered bat species
c.
changes to alpine ecosystems due to nitrogen
d.
all of the above

User Nayoun
by
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2 Answers

18 votes
18 votes

Answer:

D

Step-by-step explanation:

User Tegiri Nenashi
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3.0k points
9 votes
9 votes
The answer is All of the above
User Kalvin
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2.8k points