The EPA issued regulations in 1997 that affected this size of particulates
A) smaller than 2.5 micrometers
B) between 10 and 100 micrometers
C) between 100 and 300 micrometers
D) greater than 1000 micrometers (1 millimeter)
Answer: A
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Use the Venn diagram below for this question.
This forms mostly from ash deposits.
A. Stratovolcano B. Shield volcano C. Cinder Cone D. All of the choices are correct.
High tides that periodically occur during parallel alignment of the moon, sun and earth are called:
a. tidal waves b. spring tides c. neap tides d. lunar tides
Sunspot activity
A) typically varies in number on a roughly eleven-year cycle. B) was first observed in the late nineteenth century. C) typically has the same number of sunspots per year. D) has been conclusively linked to climate changes.
Cap and Trade is a system that ________
A) allows industries to set their own levels for pollution emission so trading can continue B) rapidly brings pollution emissions to near zero for participating industries C) permits industries that pollute under the federal cap to sell credits to industries that pollute over the cap D) specifies a certain cap on industrial pollutants that can be traded to other nations E) has been repealed by Congress as useless in diminishing pollution