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1 vote
Which of the following is a controllable risk factor of infectious diseases?

A.
drug abuse
B.
pollution
C.
air
D.
heredity

User Jiayin
by
4.8k points

2 Answers

1 vote

Answer:

a

Step-by-step explanation:

User Pieter Kuijpers
by
4.3k points
2 votes

Answer:

A is the answer

Step-by-step explanation:

User Martin Hauner
by
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