Correct : D. Clearing of forests and using that land for
2. Ill effect of deforestation is it
Correct : D. All of the above
3. Increased level of carbon dioxide in the atmosphere traps the heat rays reflected by
the earth causing an increase in the temperature on the earth. This is
Correct : C. Global warming
4. Part of the earth which supports life where living beings exists is called ____
Correct : B. Biosphere
5. Variety of organisms existing on the earth, their interrelationships and their relationship
with the environment is called
Correct : D. Biodiversity
6. Species of plants and animals which are found exclusively in a particular area are
called
Correct : A. Endemic species
7. Animals whose numbers are reducing to a level that they might face extinction are
Correct : C. Endangered species
8. ____ is the Source book which keeps a record of all the endangered animals and
plants.
Correct : B. Red Data book
9. Migratory birds fly to far off places in a particular season of the year because that
place becomes
Correct : A. Very cold
10. Reforestation means
Correct : B. restocking of the destroyed forests by planting new trees.