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.
Up to four species, and five subspecies, of giraffe are recognized (with population estimates as of 2016). Two former subspecies (Rothschild's giraffe and Rhodesian giraffe) are also included. There are an estimated 89,710 individuals of Giraffa in the wild, with 1,144 currently in captivity.