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1. Which of the following are carcinogens (risk factors that are known to cause cancer)? a. harmful chemicals

b. genetic factors
c. excessive exposure to UV rays
d. all of the above
e. none of the above

2 Answers

0 votes
D. None of the above
User Bilal Murtaza
by
7.9k points
9 votes

Answer:

d. all of the above

Step-by-step explanation:

User Sgedda
by
7.9k points
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