Of the chemicals that fall under the Toxic Substances Control Act, ________ have been thoroughly tested for toxicity and ________ have been tested for endocrine, nervous, or immune system damage
A) half; half B) 25; 10% C) 10; 10% D) half; 25% E) 10; 2%
Answer: E
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What coefficients balance the following equation? ____ P4 (s) + ____ H2 (g) ? ____ PH3 (g)
A) 4, 2, 3 B) 1, 6, 4 C) 1, 4, 4 D) 2, 10, 8
There is no specific fund for cleanup of noncoal mines on state and private lands, but there is a fund
available under SMCRA for states that have implemented its safeguards and standards for coal mining Indicate whether the statement is true or false.
Which of the following statements is not true about a meridian with a scale factor of 1?
A. The meridian must be a standard meridian. B. The meridian must be the line of 0° longitude. C. There is no projection distortion along the meridian. D. None of these is correct
Major ecosystems determined largely by climatic regions and classified largely based on predominant vegetation are called
A) biomes. B) zoogeographic regions. C) associations. D) climate zones.