Section #: 25.3
Air Resources
Practice Test
1.
What part of this township shown in the map can negatively impact the air resources?
a.
woods
b.
highway
c.
river
d.
gravel pit
Hint
2.
Oxygen makes up __________ percent of Earth's air.
a.
12
b.
21
c.
73
d.
80
Hint
3.
Oxygen __________.
a.
has not always been a part of Earth's atmosphere
b.
was used up by early life-forms during photosynthesis
c.
is released by volcanic eruptions in large quantities
d.
has been in Earth's atmosphere for the past 4.6 billion years
Hint
4.
How is oxygen released into Earth's atmosphere?
a.
photosynthetic plants
b.
volcanic eruptions
c.
burning fossil fuels
d.
burning forests
Hint
5.
What is an example of natural air pollution?
a.
carbon monoxide from engine exhaust
b.
acid precipitation
c.
dust from desertification
d.
smoke from forest fires
Hint
