Ecosystem services can be defined as the components of nature directly consumed, enjoyed, or used to provide human well being. These services are mainly the end- products of nature. According to the definition ecosystem services are components, it means they are thing or characteristics but not functions or processes.
These ecosystem components include resources such as water, vegetation types, species, and oceans. Ecosystem processes and functions are the chemical, physical, and biological interactions between ecosystem processes. Most of the functions and components of an ecosystem are intermediate products in that they are needed to produce the services but are not services themselves. It is also important to note that the ecosystem services are not benefits nor are they necessarily the final product consumed