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.
Paper Biology A Biology B June 02 The different ways in which organisms use ATP. How the structure of cells is related to their function. The different ways in which organisms use ATP.How the structure of cells is related to their function. Jan 03 How bacteria affect human lives.The biological importance of water. The biological importance of water.ow the structure of cells is related to their function. The different ways in which organisms use ATP. How the structure of cells is related to their function. Jan 03 How bacteria affect human lives. The biological importance of water. The biological importance of water.