130k views
1 vote
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 Madeorsk
by
4.7k points

2 Answers

2 votes

Answer:

D

Step-by-step explanation:

User Ken Bloom
by
4.8k points
3 votes
The answer is All of the above
User Renaldo
by
4.6k points