Carcinogens may be difficult to identify because ________
A) they are the least common toxicants
B) most are invisible
C) there is a long lag time between exposure to the agent and disease
D) there is no way to measure the carcinogenic potential of a substance
E) they are rare in nature
Answer: C
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________ water use does not divert or remove water from its source
Fill in the blank(s) with correct word
Nations that tend to have the greatest environmental impacts are those with the lowest population
growth rates. Indicate whether the statement is true or false.
If the total world population reaches 13 billion, what is one issue that consumers will need to address to maintain the population on Earth while considering carrying capacity of the Earth itself?
A) Since biocapacity will be less than carrying capacity, consumption in developing countries can increase. B) Behavior, attitudes and lifestyles will need to follow a path of increasing consumption of resources. C) Resources will need to be limited in only developing countries. D) Behavior, lifestyles, and expectations will need to follow a path of minimizing consumption of resources. E) Resource demand will need to be limited in only developed countries.
What is the IUPAC name of (CH3)2NC2H5?
A) ethyldimethylamine B) dimethylethylamine C) N,N-dimethylethanamine D) none of these