The human skin simply offers protection. Acid mantle prevents bacteria from attacking a person 's skin. UV radiation can be damaging one 's skin due to the sun 's position. Since the earth is filled with some many …show more content…
Humans are constantly in motion and working even while sleep so if humans had just one type of tissues that would most likely stress the body and mind. For example If a person 's joints contain heart tissue then him or hers joints could possibly tear or rip. The human body has to no be stressed to function effectively and that is the advantage of having so many different type of cells, moreover, the body need these different forms to allow a person to move their body in nano seconds. Time is important, however, that may sound cliche, but time and timing come into play regarding all life. It does not take no longer than nanoseconds for my fingers to type this sentence, but the information is traveling from my brain to my fingertips. The human body is too hard to explain and scientists are still discovering new things regarding the body weather being internally or externally so when trying to explain the human body at times can off generic at