Which Ultratrace Element Was Used as a Preservative for Meat,fish,and

question 8

Multiple Choice

Which ultratrace element was used as a preservative for meat,fish,and dairy products in the early 1900s,considered dangerous for humans in the 1920s,and  today,is considered beneficial for humans?

• A)cobalt
• B)arsenic
• C)boron
• D)vanadium

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Definitions:

Equal Cash Flow

Recurrent inflow or outflow of cash that is the same in amount for each period.

Annuity

A financial product that pays out a fixed stream of payments to an individual, typically used as part of retirement planning.

Sensitivity Analysis

A technique used in financial modeling to determine how different values of an independent variable affect a particular dependent variable under a given set of assumptions.

Residual Value

The estimated value of a fixed asset at the end of its useful life, important for calculating depreciation.