Multiple Choice
In which population growth models is the population growth dependent on the current population size?
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50. Population Ecology
Introduction to Population Growth Models
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Which of the following processes increase a population's size?
A
Predation and competition
B
Deaths and emigration
C
Resource depletion and disease
D
Births and immigration
Verified step by step guidance1
Understand the factors that influence population size. Population size is affected by processes that either add individuals to the population or remove them.
Identify processes that add individuals to the population. Births represent the addition of new individuals through reproduction, and immigration refers to individuals moving into the population from another area.
Contrast these processes with those that decrease population size. Deaths remove individuals from the population, and emigration refers to individuals leaving the population to move elsewhere.
Examine the other options provided in the question. Predation and competition, resource depletion, and disease are factors that typically reduce population size rather than increase it.
Conclude that the processes increasing population size are births and immigration, as they directly contribute to the addition of individuals to the population.
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