What does the art at Prehistoric rock art, Côa Valley Portugal tell us about Paleolithic man?

Isay that this a true statement

If you mean how the great lakes formed, then  the great lakes began to form at the end of the last glacial period 14,000 years  ago, ice sheets  retreated, which led to exposing the basins they had carved into land which then filled with melt-water.

They are formed to perform a single function or a set of related functions. special district governments are independent, special purpose governmental units, other than school district governments, that exist as separate entities with substantial administrative and fiscal independence from general purpose local governments.most perform a single function, but in some instances, their enabling legislation allows them to provide several, usually related, types of services.  such basic social needs as hospitals and fire protection, to the less conspicuous tasks of mosquito abatement and upkeep of cemeteries.hope this !