Water pollution can be reduced:
By keep the volume of the music we listen to and the television low at home
By not allowing factories to pour their dirty chemicals into water bodies
By not blowing the horn of a vehicle unless necessary
By using loud speakers within the limited time and volume
The grey, black or white mixture of gases is:
Oxygen
Hydrogen
Nitrogen
Smoke
Which are the main water pollutants?
Loudspeaker
Domestic sewage
Natural fertilizer
How can we avoid pollution?
By throwing garbage into water bodies
By burning garbage outdoors
By recycle, reuse and reduce
By throwing chemicals into soil
Why should we take care of other living things?
Because living things need care
Because living things cannot grow without the help of others
Because living things depend on each other
Because living things do not depend on each other
When the air contains gases, dust, fumes or odour in harmful amounts, it is called:
Water pollution
Air pollution
Soil pollution
Noise pollution
Noise pollution can be reduced by:
By treating sewage before being released into water bodies
By using natural fertilizers to grow crops instead of chemical pesticides
Which is the effect of land pollution?
Various kinds of cancers
Asthma
Diarrhoea
Hypertension
The introduction of contaminants into the natural environment that cause adverse change is called:
Preservation
Pollution
Pollination
Pollinosis
Villages are less polluted than cities because:
There are fewer number of people living in cities
There are fewer number of people living in villages
There are more vehicles in villages
There are enough space in cities to get polluted
