MicroSpacer is FDA 510K approved as substantially equivalent to other spacer devices, and is the smallest aerosol asthma inhaler spacer on the market. Replace every 4-6 months. Box contains one (1) MicroSpacerÂ® device and full instructions.
Question and answer. A chemical in groundwater that can cause genetic changes is called a: (A) teratogen (B) VOC (C) carcinogen (D) mutagen. A chemical in groundwater that can cause genetic changes is called a: (D) mutagen.Expert answered| Florpe |Points 70|. Question.uestion and answer. A chemical in groundwater that can cause genetic changes is called a: (A) teratogen (B) VOC (C) carcinogen (D) mutagen. A chemical in groundwater that can cause genetic changes is called a: (D) mutagen. Expert answered| Florpe |Points 70|.
Factor [2] above is called the residence time of the groundwater in the aquifer. The longer the. groundwater is in contact with the minerals, the greater the extent of its reaction with those. minerals and the higher will be the content of dissolved minerals.owever, a common cause of changes in water quality is through natural variations within theaquifer. What gives groundwater its taste is the amount and type of dissolved minerals within it. Purewater, i.e., having no dissolved minerals, doesnât occur naturally.