These seven (7) things are all that come to mind and I'm not sure if any, all or a combination of them could cause the lymph nodes under my jaw to become moderately sore and swollen. Again, they are not huge, hot to the touch, red, etc and there is no tracking.
Lichens and Air Pollution. One of the most common indicator species used to measure air pollution are lichens. Lichens are similar to fungi and algae, and absorb water and minerals from the air to grow on living and nonliving surfaces.As such, lichens absorb all the pollutants in the environment, and some varieties of lichen survive better in the presence of pollution than others.ichens and Air Pollution. One of the most common indicator species used to measure air pollution are lichens. Lichens are similar to fungi and algae, and absorb water and minerals from the air to grow on living and nonliving surfaces.
Water and Soil Pollutant-Absorbing Plants. Plants called hyperaccumulators absorb high levels of pollutants without being poisoned themselves. Hyperaccumulators take up toxins in soil or water -- including heavy metals, radioactive contaminates or petroleum products -- in a process called phytoremediation. Plant tissues degrade the toxins, and metals are reclaimed through composting or incineration.