Why do most humidifiers require annual cleaning and media replacement?
A) The water attracts dirt from the air.
B) Minerals in the water are left behind in the sump and media.
C) A chemical reaction between the media and the water causes a crusty white buildup.
D) The media is slowly dissolved by the water used in the humidifier.
B
You might also like to view...
A plumb line is aligned _____ .
A. horizontally with the surface of the earth B. vertically with the surface of the earth C. horizontally with the axis of the earth D. vertically with the axis of the earth
Soil application of certain pesticides reduces the diversity but increases the numbers of soil mesofauna
Indicate whether the statement is true or false
It requires ________ volt(s) to push 1 ampere through 1 ohm of resistance
A) 12 B) 1 C) 2 D) 0.1
Describe Hooke's Law.
What will be an ideal response?