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You follow a cohort of giraffes across their entire life. You find a Ro of 0.3....

You follow a cohort of giraffes across their entire life. You find a Ro of 0.3. Is this population increasing/decreasing/staying the same?

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Answer #1

The net reproductive rate (Ro) indicates the average number of offsprings that a female produces during her lifetime. Ro value of one indicates that there is no increase or decrease in the population. A value higher than one indicates that the population is continuously increasing, whereas, if the value is less than one, the population is said to be decreasing.

Therefore, when Ro is 0.3 (less than one), it means that less number of offspring is produced, as a result of which the previous generation is not replaced. Thus, the giraffe population is continuously decreasing.

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