Available Answers

1. 1.

   Match the words in Columns 1 with the phrases in Column 2.

   Column 1	Column 2
   a. E-waste	i. caused by sewage and fertilizers
   b. Sewage	ii. arsenic and flouride
   c. Natural pollutants	iii. source of heavy metal pollution
   d. Plastics	iv. clog digestive system of animals
   e. Red tides	v. cause of water-borne diseases

    

2. 2.

   Mark the statements True or False and correct the false ones.

   1. Conservation means to stop using a natural resource.
   2. Deforestation can lead to extinction of species.
   3. Thermal power stations cause air pollution only.
3. 3.

   Fill in the blanks.

   1. Heavy metal pollution can be caused by _______________ and _____________.
   2. Mining can cause loss of ______________.
   3. E-waste is the name applied to ______________ and ____________ waste.
   4. Nuclear energy can lead to hazardous _____________ ____________.
   5. "Dead zones" near the coast are due to _______________ and ____________ dumped into the sea.
4. 4.

   Give the scientific terms for each of the following.

   1. A resources that can get used up
   2. A substance that can be broken down by nature
   3. The living component of the environment
   4. An unwanted substance added to the environment
   5. Energy generated using heat of the earth
   6. A species that is dying out
   7. Judicious use of natural resource
   8. Pollution caused by hot water
   9. A protected forest area forbidden to humans
   10. Effect of Greenhouse gases
5. 5.

   What are the benefits of biodiversity?

6. 6.

   What are the environmental problems associated with hydroelectric power generation?