Biological concentration refers to the phenomenon that biological organisms or many groups of organisms at the same trophic level accumulate certain elements or difficult-to-decompose compounds from the surrounding environment
that the concentration of the substance in the organism exceeds the concentration of the substance in the environment.
Goats eat more corn kernels, it is difficult to digest for a time, coupled with goats drink into the water, corn for a long time to gather in the stomach, easy to cause stomach bloating