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4 votes
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5. Which is an environmental substance that can contribute to the development to cancer
A- Carcinogen
B- Oncogene
C- Genetic mutation
D- Heredity

2 Answers

6 votes
A. Carcinogen! Hope this helps you
User Colim
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8.2k points
3 votes
I would say A. The three other choices could lead to its start.
User Mmachine
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