Answer:The biological sequestering of a substance at a higher concentration than that at which it occurs in the surrounding environment or medium
OR
The accumulation of chemicals in the tissue of organisms through any route, including respiration, ingestion, or direct contact with contaminated water, sediment, and pore water in the sediment
OR
Progressive increase in the amount of a substance in an organism or part of an organism which occurs because the rate of intake exceeds the organism's ability to remove the substance from the body
without the graph presenting the data you can't really answer this but I assume since o Neil pass has a green environment the mice would be brown to match the ground
