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:

Basaltic Lava

A dark, fine-grained volcanic rock that forms from the quick cooling of basaltic lava, rich in iron and magnesium.

Viscous Lava

Lava that has a thick, sticky consistency due to a high silica content, flowing slowly.

Lava Fountain

A spectacular volcanic phenomenon where lava is forcefully ejected into the air from a vent or fissure, forming a fountain-like display.

Fluid Lava

describes lava with low viscosity that flows easily, typically associated with less explosive volcanic eruptions.