All of the following cause rainwater to be acidic except
A. nitrogen oxide.
B. sulfur dioxide.
C. carbon monoxide.
D. carbon dioxide.
Answer: C
Environmental & Atmospheric Sciences
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In an age-sex pyramid for the United States (2000), the biggest cohorts in males and females is due to
A) the sexual revolution of the 1960s/70s and the end of the Vietnam War. B) large families between the two World Wars. C) the baby boom. D) the baby boom echo. E) the baby boom bust.
Environmental & Atmospheric Sciences
Define metamorphic grade
What will be an ideal response?
Environmental & Atmospheric Sciences
How is the geologic time scale sub-divided into smaller units?
A. Based on equal time intervals B. Based on the fossil record C. Based on major events in Earth history
Environmental & Atmospheric Sciences
Which element has the atomic number 9?
A. Be B. F C. Na D. Ne E. B
Environmental & Atmospheric Sciences