Why have pcbs been so hard to clean up in puget sound and connected rivers?

One of the reasons PCB's have been hard to clean up from the puget sound is because they stay in the food chain. Once something is inside an animal it becomes much harder to remove from the environment than if it was just in water.

Glucose, also called grape sugar, blood sugar or corn sugar, is among the simplest and one of the primary naturally occurring sugars. produced naturally by plants as the primary photosynthesis product, it is heavily used by living beings as a main energy source and is necessary for cellular respiration. chemically, it is a monosaccharide carbohydrate and serves as a building block for complex sugars like starch.

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