The responsibility for complying with US federal air quality standards lies with
A) individuals.
B) individual states.
C) tri-state regions.
D) the federal government.
Answer: B
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What are the types of symbiotic relationships that organisms exhibit? Give examples of each
This forecast is issued at designated times each day and extends out to a week into the future
A) zone forecast B) extended forecast C) nowcast D) none of these
Which option correctly describes an effect of human activity on a river channel?
A) If logging and clearing have increased the sediment load, the channel may fill and the banks may become higher. B) If logging and clearing have increased the amount of runoff, the channel may fill and the banks may become higher. C) If agriculture and building have decreased the amount of runoff, the channel may erode further and the banks will become lower. D) If agriculture and building have increased the sediment load, the channel may erode further and the banks will become lower.
____________________ is a steering mechanism for air masses
Fill in the blank(s) with correct word