A hexahedron (plural: hexahedra) is any polyhedron with six faces. A cube, for example, is a regular hexahedron with all its faces square, and three squares around each vertex. There are seven topologically distinct convex hexahedra, one of which exists in two mirror image forms.
Some bacteria that can help the environment are called decomposers. They are nature's recyclers! They return basic chemicals to the environment for living things to reuse! For example, the leaves of many trees die in the Autumn and drop to the ground.ome bacteria that can help the environment are called decomposers. They are nature's recyclers! They return basic chemicals to the environment for living things to reuse! For example, the leaves of many trees die in the Autumn and drop to the ground.
Bacterial Structure in Relationship to Pathogenicity (page 1) (This chapter has 2 pages) Â© Kenneth Todar, PhD The Importance of the Bacterial Surface. All of the various surface components of a bacterial cell are important in its ecology since they mediate the contact of the bacterium with its environment. The only senses that a bacterium possesses result from its immediate contact with its environment.