Inhaling fine particulates from smoking or from industrial sources is most likely to
A) cause nasal irritation and sneezing.
B) result in their being trapped in and damaging lung alveoli.
C) result in their passing into the blood stream and damaging the heart and brain.
D) cause an increase in blood levels of carbon dioxide.
B
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The first commercial crop of the British North American colonies was
A. cotton B. wheat C. tea D. tobacco
Most hazardous wastes come from ________
A) common manufacturing B) pesticide production C) chemical and petroleum industries D) pharmaceutical production E) industrial processes
Which of these is the most important cause of the increase in atmospheric CO2?
A) decaying vegetation B) deforestation C) cattle D) wetlands and swamps E) burning of coal and petroleum
The ____ represents a time about 12,000 years ago when northeastern North America and northern Europe reverted to glacial conditions
a. Younger Dryas b. Pleistocene epoch c. mid-Holocene maximum d. Bölling-Alleröd period e. Medieval Climatic Optimum