When the walls of the excavations are to be kept vertical and in order to protect the safety of. workmen, the general public, this or other work or structures, or excavation walls, or pipe. installation including ma terials encountered in the excavation which have a tendency to slough.
Hierarchy of Living Things. Biological organization, or the hierarchy of life, is the hierarchy of complex biological structures and system that define life using a reductionistic approach. The traditional hierarchy, as detailed below, extends from atoms (or lower) to biospheres.
Taxonomy is the science of naming living things. Domains and kingdoms are categories used to group organisms that are structurally and genetically similar.Domains. Bacteria. These single-celled organisms are known as prokaryotes.Example: Streptococcus (the bacteria that causes strep throat).axonomy is the science of naming living things. Domains and kingdoms are categories used to group organisms that are structurally and genetically similar. Domains. Bacteria. These single-celled organisms are known as prokaryotes. Example: Streptococcus (the bacteria that causes strep throat).