Class VII

As compared to using a hose to wash car, water bucket uses
  1. less water
  2. more water
  3. equal water
  4. maybe less water or more
As compared to using a hose to wash car, water bucket uses
  1. less water
  2. more water
  3. equal water
  4. maybe less water or more
In country area, untreated sewage is pumped into tanks known as
  1. Septic tanks
  2. Sewage tanks
  3. Grit tanks
  4. Sludge tanks
Distillation is very similar to a natural process known as
  1. Nitrogen cycle
  2. Carbon cycle
  3. Water cycle
  4. Sewage cycle
Polio, hepatitis and typhoid are examples of
  1. Water-borne diseases
  2. Water-washed diseases
  3. Water-related diseases
  4. Anti-water diseases
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