All the following are considered indoor air pollutants except ________
A) radon
B) asbestos
C) cigarette smoke
D) pesticides
E) sodium chloride
Answer: E
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Which of the following reasons for climatic change is proposed by the Milankovitch theory?
A. volcanic eruptions B. changing levels of CO2 in the Earth's atmosphere C. particles suspended in the Earth's atmosphere D. variations in the Earth's orbit as it travels through space
Britain forced China to purchase opium during the first half of the 1800s in order to help Arab merchants
Indicate whether the statement is true or false
The highest grade of coal, in terms of heat value per unit weight is
A. bituminous. B. anthracite. C. peat. D. lignite.
Explain one way in which the hydrosphere, biosphere, and atmosphere each interact with or affect the lithosphere. What will be an ideal response?