major asset for the people of the country. National park is a reserved area for the conservation of entire wildlife including plants and animals. Sanctuary is a place reserved exclusively for the use of animals. Solar cell is a device that absorbs sunlight and converts it into electric energy.
Solar water heater does not require electricity, they heat up water directly from sunlight. Biogas is produced by the anaerobic decomposition of cow dung. The technique of collecting and storing rain water for future purpose is known as rainwater harvesting. Unwanted, non-working and outdated electronic products become e-waste.
TEXTBOOK EVALUATION I. Fill in the blanks . Deforestation leads to in rainfall. .
Removal of soil particles from the land is called . . Chipko movement is initiated against . .
is a biosphere reserve in Tamilnadu. . Tidal energy is type of energy. .
Coal, petroleum and natural gas are called fuels. . is the most commonly used fuel for the production of electricity. II.
State whether True or False. Correct the statements which are false . Biogas is a fossil fuel. .
Planting trees increases the groundwater level. . Habitat destruction cause loss of wild life. .
Nuclear energy is a renewable energy. . Overgrazing prevents soil erosion. .
Poaching of wild animals is a legal act. . National park is a protected park. .
Wild life protection act was established in . III. Match the following . Soil erosion - energy saving .
Bio gas - acid rain . Natural gas - removal of vegetation . Green house gas - renewable energy . CFL bulbs - CO .
Wind - non-renewable energy . Solid waste - lead and heavy metals IV. Choose the correct answer . Which of the following is / are a fossil fuel?
i. Tar ii. Coal iii. Petroleum a) i only b) i and ii c) ii and iii d) i, ii and iii .
What are the steps will you adopt for better