What do you remember about the states of matter from our lab? Differences and similarities about the 3 different states of matter. In science.

Ithink it's a, but i might be wrong

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.