1 Pharmaceutical microbiology: The study of microorganisms that are related to the production of antibiotics, enzymes, vitamins,vaccines, and other pharmaceutical products and that cause pharmaceutical contamination and spoil. This field can be further classified into the following: 2  Plant microbiology and Plant pathology: The study of the interactions between microorganisms and plants and plant pathogens. 3  Soil microbiology: The study of those microorganisms that are found in soil.
According to National Geographic, the average lifespan for a giraffe in the wild is 25 years. Giraffes have been known to live longer when in captivity in zoos.
Quick Answer. Giraffes can live as long as 25 years on the open grasslands of sub-Saharan Africa and up to 30 years in captivity. However, infant mortality is high among giraffes. Approximately 50 percent of giraffe calves do not survive past six months.