The largest category of biodiversity includes all of Earth's distinct
ecosystems. Every ecosystem has unique physical
characteristics such as specific habitat, elevation, temperature, moisture, wind,
weather, soils and the all of the life forms contained in it.
study ecological diversity are concerned with interactions among
species and how these species relate to their environment. (Becher,
Only by dealing with groups of species and their surroundings can biodiversity be preserved, because organisms work together to create
the ecosystems they live in.
For example, both plants and animals are needed to provide the
ecosystem with essential nutrients such as oxygen, carbon and nitrogen.
The efficiency of the water cycle depends on intact bodies of water,
forests and all other ecosystems. (Becher, 1998)