The presence of a mountain range could isolate the gene pool of the species which would likely change or mutate characteristics may arise in the species. <span />
The more northern the more colder the more towards the middle of the earth you are the warmer it is. Either it's ice or water.
And now, back to business: <u>Cape Cod</u>
You have to pay more attention at class to understand the question dummmie..!!
Answer:
The Great Lakes began to form at the end of the last glacial period around 14,000 years ago, as retreating ice sheets exposed the basins they had carved into the land which then filled