tradlu5vbeKalis tradlu5vbeKalis

10-01-2016
Biology

contestada

Birth defects can be caused by:
A. genetic factors
B. unknown factors
C. environmental factors
D. all of the above

Respuesta :

yoyob1364 yoyob1364

10-01-2016

all of the above because many thing can cause birth defects

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Аноним Аноним

10-01-2016

- - D all of the above

This is because genetic factors, unknown factors, and environmental factors are all things that can be caused by birth defects.

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