How many terms is the president of the united states allowed to serve?

Technically the president is only allowed to serve out 2 four year terms each.

Both types of rubrics

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.