Bioaccumulation and Biomagnification Practice Test

A single largemouth bass in a reservoir is tested for mercury (methylmercury) each year. Its mercury concentration rises from 0.3 ppm at age 1 to 0.7 ppm at age 3 to 1.2 ppm at age 6, even though the water concentration stays very low and stable. Which process is best illustrated?

DDT was sprayed near wetlands decades ago. Today, a heron that eats fish has 9 ppm DDT in its fat tissue, while the fish it eats average 2 ppm. Which term best describes why the heron’s concentration is higher than the fish’s?