Significant components of indoor air pollution include all of the following except
A. radon.
B. carbon dioxide.
C. carbon monoxide.
D. volatile organic compounds.
Answer: B
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In his book Garden Cities of Tomorrow, Sir Ebenezer Howard proposed relocating excess urban population into new medium-sized garden cities
Indicate whether the statement is true or false.
What is the main source of oil that reaches the ocean?
A) ?offshore drilling leaks B) ?runoff from city streets and dumping of waste oil C) ?improper nearshore refining methods D) ?oil tanker spills
In the process of scientific inquiry, a theory is best defined as:
A) a "best guess" that may explain how something works, but is as yet untested and unproven. B) the initial formulation of an idea based on a few observed facts. C) a hypothesis that has been extensively tested and is generally accepted by the scientific community. D) a final solution to a scientific problem that is proven correct and will never be disproven.
Which of the four numbered features on this figure is the oldest?
A. 1 B. 2 C. 3 D. 4