ECOLOGY
CHEMICAL CYCLES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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If birth rate < death rate, population size increases
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If death rate < birth rate, population size decreases
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If birth rate > death rate, population size increases
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If death rate > birth rate, population size increases
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Detailed explanation-1: -Second stage of demographic profile referred as a stage of population explosion as here, birth rate remain high while death rate starts to fall, drastically causing rise in population growth at a faster rate. Hence, given statement is true.
Detailed explanation-2: -Natural decrease occurs when death rate is greater than birth rate. This means that more deaths occur in a population than babies are born so population numbers decline.
Detailed explanation-3: -If the birth rate stays the same and the death rate decreases, then population numbers will grow. If the birth rate increases and the death rate stays the same, then population will also grow.
Detailed explanation-4: -when birth rate increases than death rate there is an increase in population.
Detailed explanation-5: -Comparing the birth rate and death rate of a given area provides insight into whether that population is increasing or decreasing. When the birth rate is larger than the death rate, we know that more people are being “added” to the area than are being “taken away”, meaning the population is growing.