A possible answer could be the quality of air being inhaled
The preventive measures for drug addiction are:
- attractive advertisements should be banned
- avoid bad circle and peer group
- rehabilitation centres must be established
Explanation:
During implantation, the trophoblast differentiates into two distinct layers: the inner cytotrophoblast, and the outer syncytiotrophoblast.
They can live on hard surfaces for up to 24 hours, but not things like tissues only live up to 15 minutes
i think it'd be all of the above? a,b,c,d
