The Global Phosphorus Cycle Is Called a ʺCycle,ʺ Yet It

question 96

Essay

The global phosphorus cycle is called a ʺcycle,ʺ yet it has no atmospheric component. Phosphorus weathers from rocks and enters the soil. Once phosphorus is incorporated into plants or animals, how is it returned to the rock phase?

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Definitions:

Compound Interest Tables

Tables used to find the future value of an investment based on compound interest, which includes interest earned on both the principal and previously earned interest.

Interest Rate

The rate at which a borrower pays interest for borrowing money from a lender.

Equal Annual Payments

Payments made in uniform amounts each year, typically used in amortization of loans or in annuities.

Compound Interest

This is the calculation of interest on a deposit or loan that takes into account both the initial principal and the compounded interest from past periods.