At CO levels of 100 ppm or less in the bloodstream
A) carbon monoxide can contribute to acid rain.
B) there is no noticeable health effect.
C) humans might develop headaches and suffer from impaired vision and judgment.
D) the human bloodstream is unaffected.
C
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Before 1867, the capital of Japan was
A. Fukuoka B. Hiroshima C. Kyoto D. Sapporo
By promoting mass transit, biking, and walking, the city of Portland, Oregon has saved its residents how much in transportation costs?
A. about $1 million B. more than $10 million C. about $100 million D. more than $1 billion E. about $10 billion
Le Châtelier's Principle applies to which of the following systems?
A) a system in which the reaction is moving left to right B) a system in which the reaction is moving right to left C) a system which has reached equilibrium D) all of the above
If the updraft in a supercell is so strong that precipitation cannot fall through it, southwesterly winds aloft usually blow precipitation ____
a. northwestward b. southwestward c. northeastward d. southeastward e. straight westward