If a population of 50 Paramoecium present in a pool increases to 150 after an hour, what would be the growth rate of population?

(b) The number of persons added each year

(i) The family planning programme helped in increasing the awareness about the benefits of smaller family size. This helped in reducing the rate of population growth in India since 1981.  (ii)...

Population growth is about increase or decrease in the population. Population change is about changes in population composition; like age structure, sex ratio, literacy rate, occupational structure, etc. 

Yes. An inverted bell-shaped age pyramid is obtained. The young of pre-reproductive age group individuals are less in number and both pre-reproductive and reproductive stages are in the same level

The correct answer is b. 200

c. It will increase

(a) Hour hand covers an angle of 360° in 12 hours. ∴Time taken to cover an angle of 135° = 12/360 =4.5 h ∴Required time = 3 + 4.5 = 7.5 =...

Total mass of solution = 150 + 150 = 300 g Q = Total heat produced = 300 x (28.77-25.35) cal =300 x 3.42= 1026 cal Heat of neutralization = Q/150 x 1000 x...

(a) high birth rate low death rate