Question

population growth
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which is the change in size of a group of organisms of the same species over time?
population growth
death rate
birth rate
immigration and emigration
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Explanation:

Population growth refers to the change in the size of a group of organisms of the same species over time. Death rate is the number of deaths in a population over a certain period. Birth rate is the number of births in a population over a certain period. Immigration is the movement of individuals into a population and emigration is the movement of individuals out of a population. These last three terms are factors that can affect population growth but do not directly represent the change in population size over time.

Answer:

population growth