What is Environmental Change?

Legal Definition
Environmental change is a change or disturbance of the environment most often caused by human influences and natural ecological processes. Environmental changes can include any number of things, including natural disasters, human interference, or animal interaction. Environmental change does not only encompass physical changes, but it can be things like an infestation of invasive species is also environmental changes.
-- Wikipedia
Legal Definition
Alterations in that which comprises an environment. Examples are changes in precipitation or global temperatures. Natural occurrences or human activity cause differences to the characteristics of an environment.