Neural tube defects can be linked to:
1. A mother's drug habit while pregnant.
2. A mother's lack of folic acid while pregnant.
3. A fetus's exposure to environmental toxins.
4. A mother's alcohol consumption while pregnant.
2
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1. Drug habits can be linked to neurological damage and growth retardation.
2. Folic acid is needed for neural tube closure and should be taken as a prenatal vitamin.
3. Exposure to toxins can cause various cognitive and physical anomalies.
4. Alcohol can cause cognitive and physical anomalies if taken while pregnant.
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