As an acid mixes in water:
A) the number of hydrogen ions will increase. B) the number of hydroxide ions will increase.
C) the pH remains at 7. D) it becomes buffered.
Answer: A
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DNA profiling was less useful in identifying remains from the 2004 tsunami than in criminal cases because
A) the DNA after the tsunami was too wet to analyze. B) the tsunami left few bodies with collectible DNA. C) not enough repeats were profiled. D) none of the victims were listed in the FBI's files.
__________ species, which evolved in one place and are present only in that habitat, are highly
vulnerable to extinction. Fill in the blank(s) with the appropriate word(s).
Which of the following is a by-product of yeast fermentation?
A) Sugar B) Chitin C) Oxygen gas D) Carbon monoxide E) Carbon dioxide
Some toxic animals are brightly colored, as a means of warning others of their danger
Indicate whether the statement is true or false