What is treating water used to remove before drinking?
arsenic air cellulose chemicals Collagen loose dirt water vapor ice
A B C D E F G H
Arsenic, a naturally occurring substance, contaminates water sources in many countries.
treating water is used to remove arsenic before drinking
What is treating water used to remove before drinking? (A) arsenic (B) air (C) cellulose (D) chemicals (E) Collagen (F) loose dirt (G) water vapor (H) ice