Giraffe Characteristics. The giraffe is the tallest living animal which is instantly recognizable by its exceptionally long neck. Adult males stand 15 â 19 feet (4.6 â 6.0 metres) tall, whereas females are shorter at 13 â 16 feet (4 â 4.8 metres) tall.
Bacterioplankton are bacteria and archaea, which play an important role in remineralising organic material down the water column (note that many phytoplankton are also bacterioplankton). Plankton are found throughout the oceans, seas and lakes of Earth.
Bacillus thuringiensis (Bt) is a live microorganism that kills certain insects and is used to kill unwanted insects in forests, agriculture, and urban areas. In a purified form, some of the proteins produced by Bt are acutely toxic to mammals.