The source of photochemical smog is motor vehicle exhaust, NO and VOCs, reacting with sunlight. Effects of Acid Deposition. More commonly called acid rain, acid deposition alters chemistry in soil and âmobilizesâ toxic metal ions to the soil, harming soil organisms by hindering their nutrient uptake.
The human hair IS APRROX 0.004' (four thousands of an Inch and there are 12 inches to the foot)So therefore .004 divided by 12 is your answer.
How Hair Grows: Most people have about 100,000 hairs on their head. Normal growth is about one quarter to one half inch per month which, for some, can actually be considered a pretty fast rate. Every hair on your head will go through three (3) phases: anagen, catagen, and telogen. 1  Anagen â The. 2  can last from 3 to 7 years. 3  Catagen â The. 4  lasts approximately 2 to 4 weeks. 5  Telogen â The.