Examlex
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?
Q8: A polymorphic locus is one that<br>A) codes
Q9: Which of the following is not an
Q12: All of the species in all of
Q14: Desert soils are often termed _.
Q30: Why does Australia have a wide variety
Q30: The beauty of a national park is
Q34: The golden lion tamarin (Leontopithecus rosalia) has
Q54: Weathering is important to the input of<br>A)
Q56: Leibig's law of the minimum<br>A) fails to
Q94: Why might a forest contain both climax