Advertisements
Advertisements
प्रश्न
If 8 individuals in a population of 80 butterflies die in a week, calculate the death rate of the population of butterflies during that period.
उत्तर
Death rate = `"Total number of death"/"Total population" xx 1000`
Thus, the death rate is equal to 100 deaths per 1000 individuals per week.
It can be also calculated directly like
It can be also calculated directly like.
8/80=0.1 deaths /week
APPEARS IN
संबंधित प्रश्न
With the help of suitable diagram describe the logistic population growth curve.
List any three important characteristics of a population and explain.
Examine the following statement and correct the incorrect one.
Greater economic prosperity indicates the development of a region.
What is population growth? What does population change indicate for an area?
What is the present annual growth rate of India?
Which of the following is not a pull factor?
Which of these statements is not true?
When will be the growth of population positive in any place and in which one of the following conditions?
Analyse the main features of Phase-III (1951 - 81) of growth of population in India.
Assertion (A): Population of a region does not change.
Reasoning (R): Birth rate, death rate and migration affect the population of a region.
