Soil moisture. Soil moisture affects the soil biota in two ways. Biologically water is essential for life and for enzyme activity and metabolism and, is a solvent for biological nutrients and other chemicals. Physically, soil moisture affects soil temperature (water is good conductor of heat) and soil aeration.oil moisture. Soil moisture affects the soil biota in two ways. Biologically water is essential for life and for enzyme activity and metabolism and, is a solvent for biological nutrients and other chemicals. Physically, soil moisture affects soil temperature (water is good conductor of heat) and soil aeration.
Your blood is actually always red! Blood in your veins has very little oxygen and is a dark red color that looks almost blue when covered by your skin. Your arteries have bright red blood because it has a lot of oxygen in it that is being carried throughout your body to be used by tissues.
The current mythology is that arterial blood and that exposed to the air (bleeding) is red because oxygen binds with the hemoglobin resulting is a red color. Venous blood is bluish because it is oxygen depleted which results in a blue color. The veins that carry the venous blood are just under the skin hence this is the blue blood you see. The arterial blood is carried in the arteries which are deep in the body and not seen through the skin.