Complete the following nuclear equation:
Tl ? 
Pb + ??
A. 
e
B. gamma ray
C. 
He
D. both A and B
E. none of the above
Answer: A
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Taxonomy is the study of biological classification schemes. Indicate whether the statement is true or false
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A) sub-cultures B) cultures C) races D) religions
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Indicate whether the statement is true or false