Which Species Can Be Utilized in Biomining Because It Oxidizes

question 10

Multiple Choice

Which species can be utilized in biomining because it oxidizes copper and iron sulfides?

• A) Geobacter metallireducens
• B) Sulfurospirillum barnesii
• C) Haloferax volcanii
• D) Acidithiobacillus ferrooxidans
• E) Bacillus subtilis

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Definitions:

Bond Ratings

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Moody's Baa

Moody's Baa rating denotes bonds that are considered medium-grade, subject to moderate credit risk, and as such, investors should investigate further.

S&P's BBB

A credit rating by Standard & Poor's that indicates an investment grade with moderate credit risk.

Bond Ratings

A system used to assess the credit quality and risk level of bonds, typically assigned by rating agencies.