For How Long Did Fine-Grained Dust Particles from the Eruption

question 56

Multiple Choice

For how long did fine-grained dust particles from the eruption of Mount Pinatubo remain in the atmosphere?

• A)several days
• B)several weeks
• C)several months
• D)several years

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Definitions:

Density Dependent

Factors whose effects on the size or growth of the population vary with the population density.

Earthquake

A natural geological event characterized by the sudden release of energy in the Earth's crust that creates seismic waves, often causing shaking and displacement of the ground.

Reproductive Base

Of a population, members of the reproductive and pre-reproductive age categories.

Plot Sampling

Using demographics observed in sample plots to estimate demographics of a population as a whole.