Assimilation is taking place in the liver or any other cell. â¢ In absorption, nutrients are added to the blood stream or lymph, but in assimilation, nutrients are taken out from the blood stream/ lymph. Related posts: 1  Difference Between Mechanical Digestion and Chemical Digestion.
Why Bottled Water Has an Expiration Date. Bottled water may carry an expiration date, but under typical storage conditions it does not go bad. It can grow algae and absorb chemicals from its container that make it taste bad. GNL Media / Getty Images.
Water with a shelf life must be replaced whether it is consumed or not, which increases sales. Bottled water is, for the most part, an ecological disaster. The plastic is not fully recycled--much of it ends up in land fills, or burned in waste to energy plants.