It is represented by a small rectangle with curved corners and appears at the start and the end of a flowchart ​

Documents or reports

Explanation:

A rectangle with a curving bottom-left region represents a document or report. A published document is also represented. This form is similar to Document, except it contains a number of papers or reports. This can also be used to indicate a number of printed papers.

This type of flowchart depicts the real Process Flow and specifies the individuals or groups engaged at each stage.

answer ( groundwater);