Methylmercury Is an Organic Mercury Compound That Is a Waste

question 20

Essay

Methylmercury is an organic mercury compound that is a waste product of industrial processes and also results from the burning of fossil fuels. Methylmercury has been shown to increase up food chains by biomagnification. Bigeye tuna (Thunnus obesus) can have tissue concentrations of methylmercury of 0.69 ppm (parts per million). Assuming a food web that starts with phytoplankton (0.00069 ppm) and a 10-fold biomagnification from each level in the food chain to the next level, calculate the concentration of methylmercury at each level in the food chain. How many levels are there in the food chain, including the phytoplankton and the tuna?

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Definitions:

Pure Yield Curve

A theoretical representation of the rates of interest for zero-coupon bonds across different maturities under the assumption of no risk.

Coupon Bond

A type of bond that pays the holder a fixed interest rate (coupon) over its lifetime, and the principal amount is repaid at maturity.

Yield To Maturity

Yield to Maturity (YTM) is the total anticipated return on a bond if the bond is held until it matures, accounting for interest payments and principal repayment.

Par Value

Par value is the face value of a bond or the stock value stated in the corporate charter, which signifies the minimum price that the securities can be issued for.