MeroAnswer

Meroanswer Daily Quiz #27(Physics)
Half- life of a radioactive substance is 1060 years, what is it's average life ?
A. 1530 years
B. 14360 years
C. 1510 years
D. 1410 years

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Meroanswer Daily Quiz #25 (Zoology)
Which is responsible for skin pigmentation?
A. Keratin
B. β−carotene
C. Histochrome
D. Melanin