APES MATH REVIEW

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What is the formula to calculate percent change?

Back

Percent Change = ((New Value - Old Value) / Old Value) * 100

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How do you calculate the annual rate of change in population?

Back

Annual Rate of Change = (Population at End - Population at Start) / Number of Years

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What is the Rule of 70 and how is it used?

Back

The Rule of 70 is a formula to estimate the doubling time of a population: Doubling Time (years) = 70 / Growth Rate (%)

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What is Gross Primary Productivity (GPP)?

Back

GPP is the total amount of carbon fixed by photosynthesis in an ecosystem per unit area per year.

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What is Net Primary Productivity (NPP)?

Back

NPP is the amount of carbon that remains after accounting for respiration: NPP = GPP - Respiration.

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How do you calculate average temperature from a set of data?

Back

Average Temperature = (Sum of all temperatures) / (Number of temperatures)

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What is the significance of population growth rates?

Back

Population growth rates indicate how quickly a population is increasing or decreasing, impacting resources and planning.

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What does a negative percent change indicate?

Back

A negative percent change indicates a decrease in value over the specified period.

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What is the importance of understanding ecosystem productivity?

Back

Understanding ecosystem productivity helps assess the health and sustainability of ecosystems.

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How can population data influence environmental policy?

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Population data can inform resource management, conservation efforts, and urban planning.