Which of the following rot completely and do not smell ?
Left over food
Broken glass
Aluminium wrapper
Polythene bags
Composting is :
Burning of wastes
Rolling and conversion of some materials into manure
Soaking in water and making the materials into a paste
Disposting wastes in a garbage bin
Garbage collected from our houses should be dumped in :
Garden
A playground
Land fill
The road side
Movement of our body is helped by :
Long bones
Back bone
Limbs
Joints
Unwanted or unusable remains or by - products of materials or food are known as:
Plastic
Waste
Recycling
Polyethene.
Which of the following is an undesirable effect of disposing plastic bags in gardens and parks ?
Animals may eat them and die
They make the place dirty for other people
They stop the flow of water in the place
All
For healthy teeth and bones the following mineral is required :
Iron
Calcium
Sodiums
Magnesium
Cholera is spread through:
Food and water
Air
Ants
Contact
AIDS is not spread through:
Sharing unsterilised syringe
Contact with body fluid
Infected mother to the child
Sharing clothes and food