In the Grass Park Experiment, Researchers Have Fertilized a Grassland

question 18

Multiple Choice

In the Grass Park Experiment, researchers have fertilized a grassland at the Rothamsted Experimental Station in Great Britain since 1856. Sampling for species diversity through time shows that rank-abundance curves have gotten ________ over time, indicating ________ species evenness.

• A) steeper; increasing
• B) steeper; decreasing
• C) more shallow; increasing
• D) more shallow; decreasing
• E) Rank-abundance curves have not changed through time.

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Definitions:

Today's Dollars

An amount of money adjusted for inflation to reflect current purchasing power, often used to compare money values at different times.

Investment

The allocation of resources, such as capital or time, in anticipation of generating income or profit.

Modified Duration

A measure of the sensitivity of a bond's price to a change in interest rates, adjusting for the fact that the bond's cash flows change as yields change.

Maturity

The specific day when the core sum of a financial product, like a bond or loan, must be paid back to the investor.