<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def create_environment_dict(overrides):
 """ Create and return a copy of os.environ with the specified overrides """

    result = os.environ.copy()
    result.update(overrides or {})
    return result