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.
Because they interact with light to absorb only certain wavelengths, pigments are useful to plants and other autotrophs --organisms which make their own food using photosynthesis. In plants, algae, and cyanobacteria, pigments are the means by which the energy of sunlight is captured for photosynthesis.igments are chemical compounds which reflect only certain wavelengths of visible light. This makes them appear colorful. Flowers, corals, and even animal skin contain pigments which give them their colors. More important than their reflection of light is the ability of pigments to absorb certain wavelengths.