problem 1: Distinguish between the given pairs:

a) Biome and Community.
b) Food chain and Food web.
c) Savanna and Tundra.
d) Industrial wastes and Domestic wastes
e) Traditional agriculture and Modern agriculture

problem 2: prepare short notes on the given terms:

a) Bhopal gas tragedy.
b) Mediatory effects of the atmosphere.
c) Acid Rain.
d) Land as a non-living resource.
e) Deforestation due to development projects.

problem 3:

a) Describe the dangerous effects of plant protection chemicals on food items.
b) Draw a well labeled diagram of the water-cycle.
c) Distinguish between expansive and constrictive population histograms.

problem 4:

a) List out any six effects of urbanization on the environment and describe any one of them.
b) describe the steps included in the secondary treatment of sewage water in order to make it appropriate for drinking purposes.

problem 5:

a) Give the differences between geological and accelerated erosion.
b) describe the two wide methods of processing and recycling industrial wastes.
c) Distinguish between carcinomas and sarcomas.

problem 6:

a) describe the modes of transmission of communicable diseases.
b) Describe why it is necessary for India to have developmental projects.
c) Describe with the help of illustrations why industries produce excessive wastes.

problem 7:

a) In brief prepare about the role of non-governmental organization
b) Describe with the help of illustrations how bio-fertilizers are used in the conservation of cultivable lands.
c) prepare about the insecticide Act of India in short.

problem 8:

a) Give any five concepts of the sustainable society.
b) List out the five reasons for conserving wildlife and describe any one.

problem 9:

a) prepare about the three kinds of air quality standards which are prescribed by the Central Pollution Control Board of India.
b) List out and describe the four points which should be taken into consideration for preventing or controlling desertification.