Choose the One Most Appropriate Answer for Each

question 55

Multiple Choice

Choose the one most appropriate answer for each.
-Bioaccumulation

• A)Species that remains restricted to the area where it evolved
• B)Species that fail to turn up signs of any individuals after repeated, extensive surveys of its known range
• C)New method of harvesting trees to preserve diversity
• D)Field of biology that documents biodiversity, and seeks way to maintain it to ensure our survival
• E)Species vulnerable to extinction
• F)Work designed to renew or recreate a natural system that has been degraded or destroyed
• G)Places that have species found nowhere else and are under great threat of destruction
• H)Species likely to become endangered in the near future
• I)Chemical pollutant becomes increasingly concentrated as it moves up through food chains
• J)Narrow corridor of vegetation along a stream or river
• K)An organism builds up increasing amounts of a chemical pollutant it its tissues over time

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Definitions:

Single-Index Structure

A model that describes the returns of stocks based on a singular market index, explaining stock movements with overall market movements.

Covariances

A measure of the degree to which two variables move in relation to each other.

Mean-Variance Efficient

A portfolio construction strategy that aims to achieve the highest expected return for a given level of risk by optimizing the mix of investments.

Expected Returns

The anticipated return on an investment, based on historical averages or statistical analyses.