Answer:
Population:
Population is the total of all the organisms in a similar category. Population considers all the elements in a particular area. In a particular time gap, the population will be monitored. The opportunities will be evaluated based on the population study of a particular area.
Statement:
Fertility measures the productiveness. It is necessary to consider fertility for studying the population. Fertility helps to evaluate the number of babies born in an area for a particular period. The crude birth rate is the widely used measure of fertility.
Mortality is the opposite concept of fertility. Mortality studies the number of deaths in a particular locality for a specified period. The crude death rate measures the mortality in a particular area.
Hence, options (a), (b), and (c) are incorrect.
Justification:
Mortality measures the death trend in a particular area for a particular period. The crude death rate is the widely used measure for measuring mortality. Birth crude rate is the measure used to measure the fertility.
Hence, the option
is correct.
Answer:
Population:
Population is the total of all the organisms in a similar category. Population considers all the elements in a particular area. In a particular time gap, the population will be monitored. The opportunities will be evaluated based on the population study of a particular area.
Statement:
Sociology is the study regarding the social interaction of a person at every level of life. Sociology clearly explains about the behavior of a person towards the society. The statistical study about the human population is known as demography.
Ecology deals with the scientific study and analysis of various organisms and its interaction with the environment. Zero population growth is an indication of no improvement or decline in the population.
Hence, options (a), (c), and (d) are incorrect.
Justification:
Demography helps to study the human population. It is a scientific study about the human population.
Hence, the option
is correct.
Answer:
Population:
Population is the total of all the organisms in a similar category. Population considers all the elements in a particular area. In a particular time gap, the population will be monitored. The opportunities will be evaluated based on the population study of a particular area.
Justification:
Sex ratio is the ratio between the number of males and females. A sex ratio higher than 100 is an indication of excess men over females. In the given situation, the sex ratio is 115. It means that 115 men are available for every 100 females. This situation indicates that 15 men are in excess for every100 females.
Hence, the given statement is
.