Water logging and soil salinity are some of the roblems that have come in the wake of the green revolution. Discuss their causes and adverse effects to the environment.

Describe water logging and soil salinity.

What adverse effect does its excess have on the environment?

Discuss the causes and effects of water pollution. What measures need to be taken to control?

A number of infectious diseases have ill-effects on human health while some of these are fatal. AIDS is one of the highly serious pandemic diseases. Though a number of drugs are available but none of the these provides absolute protection against the disease. Discuss the following: How HIV attacks and multiples inside host cell?

A number of infectious diseases have ill-effects on human health while some of these are fatal. AIDS is one of the highly serious pandemic diseases. Though a number of drugs are available but none of the these provides absolute protection against the disease. Discuss the following: Which vaccine trials are being conducted in the world to develop AIDS vaccine?

A number of infectious diseases have ill-effects on human health while some of these are fatal. AIDS is one of the highly serious pandemic diseases. Though a number of drugs are available but none of the these provides absolute protection against the disease. Discuss the following: What are dificulties against developing the AIDS vaccine?

A number of infectious diseases have ill-effects on human health while some of these are fatal. AIDS is one of the highly serious pandemic diseases. Though a number of drugs are available but none of the these provides absolute protection against the disease. Discuss the following: What is peculiar about HIV than the other viruses?

After watching a programme on TV about the adverse effects of junk food and soft drinks on the health of school children, Sonali, a student of Class XII, discussed the issue with the school principal. The principal immediately instructed the canteen contractor to replace the fast food with the fibre and vitamin rich food like sprouts, salad, fruits, etc. This decision was welcomed by the parents and the students. After reading the above passage answer the following question : Give two examples of water-soluble vitamins.