To ensure that water is safe to drink, harmful what are removed before drinking?
leeches seeds toxins currents bacteria substances Roundworms plants
A B C D E F G H
To ensure that it is safe to drink water, treat it all the time.
To ensure that water is safe to drink harmful substances are removed before drinking.
To ensure that water is safe to drink, harmful what are removed before drinking? (A) leeches (B) seeds (C) toxins (D) currents (E) bacteria (F) substances (G) Roundworms (H) plants