fertility rates in developed nations

It indicates the fertility of women. TFR indicates how many among reproductively potential women can actually produce children. The parameter like TFR as percentage of fertile women in a total population or as percentage of reproductively active population (male and female) indi..

The fertility of the topsoil can be restored by taking the following measures. a) Regular use of manures and fertilizers can replenish the minerals used by the crops. Green manuring can also be done. b) Crop rotation should be practiced c) New techniques of applying water benea..

Reproduction and Development..

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Interrelationship of Population, Environment and Development - As mentioned earlier man's intervention is causing drastic changes in the environmental systems of earth and disturbing its ecological balance. This disturbance gets compounded with the problem of population explosion in the w..

>The database forms the basis of future plans also. The trend established by comparison with earlier years can lead to meaningful projections about total population, expected growth rate, variations in age, composition of population, literacy rate, death rates etc., Th..

Population growth rate refers to net rate at which population is added annually to the population. Population growth rate = (B r + I r ) - (D r + E r ) where B r - Birth rate I r - Immigration rate D r - Death rate E r - Emigration ra..

Rates of most chemical reactions increases with temperature because the rate constant 'k' increases with temperature. The temperature dependence of the rate constant is given by the Arrhenius equation, where..

It is the development of fruits without fertilization and formation of seeds or embryo. Therefore, the fruits are seedless. Auxins help in parthenocarpic development of fruits like guava, papaya, banana, orange and tomato which are seedles..

These are shared by all nations. Examples: Air and solar energy. Study of natural resources can be treated to have run parallel to course of human development as well as parallel to the course of evolution of science itself. The study of natural resources has been an inseparabl..