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.
The color of the pigment comes from the wavelengths of light that are reflected, or in other words, those wavelengths not absorbed. Chlorophyll, the green pigment common to all photosynthetic cells, absorbs all wavelengths of visible light except green, which it reflects. This is why plants appear green to us.Black pigments absorb all wavelengths of visible light that strike them. White pigments reflect most of the wavelengths striking them.Each pigment has a characteristic absorption spectrum describing how it absorbs or reflects different wavelengths of light.his is why plants appear green to us. Black pigments absorb all wavelengths of visible light that strike them. White pigments reflect most of the wavelengths striking them. Each pigment has a characteristic absorption spectrum describing how it absorbs or reflects different wavelengths of light.