Available Answers

1. 1.

   Fill in the blanks.

   1. ______________ means the presence of harmful substances in air, water and land.
   2. The ______________ from vehicles and factories is released into the air making it dirty.
   3. Polluted water contains many harmful ______________ which spread diseases.
   4. Land pollution is generally caused by ______________ and industrial waste.
2. 2.

   Fill in the blanks.

   1. Smoke from ______________ and ______________ goes up in the air.
   2. ______________ cause damage to aquatic life.
   3. ______________ waste and ______________ waste should be disposed off separately.
   4. ______________ stops the flow of water in the drains.
   5. Instead of plastic bags we can use ______________ and ______________ bags.
3. 3.

   Name two of each.

   1. Things that pollute air
   2. Harmful gases from industrial units
   3. Things that pollute water
   4. Things that can be recycled
4. 4.

   Answer in one or two words.

   1. Spoiling the beauty of our earth
   2. We burn it to get heat and it is a fuel
   3. The authority in your area that is responsible for waste management
   4. Changing waste paper into useful paper again
   5. CNG, LPG are the names of these
5. 5.

   What do you mean by pollution?

6. 6.

   Write two ill-effects of water pollution?