The environment, in the biophysical context, is the physical and biological factors along with their chemical interactions that affect an organism. In other contexts environment may also be used to refer to the immediate surroundings, to a milieu or to the environs within a system or topic, for instance computer science.
The scope of the biophysical environment is all that contained in the biosphere, which is that part of the Earth in which all life occurs. Ecosystems, of which there are numerous types and are a defined part of the biosphere, collectively make up the whole of the biosphere. Within an ecosystem there are habitats in which an organism (including humans) exists. The environment can be divided into two categories - the natural environment and the built environment, with some overlap between the two. At its most natural, an environment would lack any effects of human activity, although the scale of this activity is such that all areas of the Earth have had at least some influence by humans. At the other end of the scale is the built environment and in some cases it has the biotic component that is virtually absent.
The scope of the biophysical environment is all that contained in the biosphere, which is that part of the Earth in which all life occurs. Ecosystems, of which there are numerous types and are a defined part of the biosphere, collectively make up the whole of the biosphere. Within an ecosystem there are habitats in which an organism (including humans) exists. The environment can be divided into two categories - the natural environment and the built environment, with some overlap between the two. At its most natural, an environment would lack any effects of human activity, although the scale of this activity is such that all areas of the Earth have had at least some influence by humans. At the other end of the scale is the built environment and in some cases it has the biotic component that is virtually absent.
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