Calculate the annual rate of natural increase of a population(r) from the following data: the population has 1000 individuals, a birth rate of 60 per year and a death rate of 10 per year.

Describe any one of the following biomes and write also about the threat faced by it.

i) Tundra

ii) Tropical rain forest

What do you understand by the term biome?

Solar energy

Noise pollution induced diseases

Effect of atmospheric pollution on animals

Plant protection chemicals

Communicable diseases

Discuss with the help of suitable examples, how various human activities are responsible for land degradation.

“Most of the Third World cities are really two cities within one” Discuss.

Describe the loss of Wild Life in India.

Differentiate between Supportive and Assimilative carrying capacity.

Why coliforms are selected as indicator microorganisms? Discus briefly the membrane filter tests for their detection in water. What are advantages and disadvantages of this method over other methods?

Discuss the basic components of flame photo meter and atomic absorption spectrometer. Write down the limitations and advantages of both the techniques.

Find the cell constant for a conductance cell in which the conductance, G, of a 0.100 M KCl solution is 0.01178 at 25^oC. The molar conductance for 0.100 M KCl at 25^oC is 128.96 S cm² mol^-1. If a 0.0500 M solution of an electrolyte has a measured conductance of 0.00824 S using this cell, what is the molar conductance of the electrolyte?

Describe briefly the principle and working of the glass electrode. How is the pH of soil measured?

Describe the application of ion exchange in treatment of petroleum refinery drainage water

List the precautions which must be followed during sampling for analysis.

Briefly discuss the water associated hazards from ingestion of biological agents

Explain important parameters which are required to be known for proper treatment of sewage.