Study Outline. 1  Microbiology-An Introduction. 2  Microbiology is the study of organisms too small to be clearly seen by the unaided eye (i.e., microorganisms); these include viruses, bacteria, archaea, protozoa, algae, and fungi.tudy Outline. 1  Microbiology-An Introduction. 2  Microbiology is the study of organisms too small to be clearly seen by the unaided eye (i.e., microorganisms); these include viruses, bacteria, archaea, protozoa, algae, and fungi.
Well, according to the CIA's The World Factbook, the current average human lifespan is approximately 66 and a half years. On average the current life expectancy for the world is about 67.2 years.
Women's life expectancy continues to be higher than men's. Although life expectancy has increased over the total US population, women are still expected to live longer than men. The report reveals that in 2012, the life expectancy for females stood at 81.2 years, while the life expectancy for men was 76.4 years. This difference of 4.8 years is the same as reported in 2011.