If fossils of a water animal or plant are found in a place then that place used to be covered by water in the past.
Fossils are the remains of prehistoric life.
If remains of prehistoric life are found in a place then that place used to be covered by water .
What being found in a place shows that place used to be covered by water?
Options:
  * volcanoes
  * wind
  * plankton and nonliving organic
  * dead organisms
  * marshes and swamps
  * sedimentary rocks
  * dirt
  * remains of prehistoric life