Greek was a region of mountains. The region of Greece resulted in independent city-states. This resulted in the start of wars between the city-states as they were not unified as one. The nearness to the Mediterranean allowed them to become a dominant power commercially with other regions.
Persia, unlike Greek was unified and had less in-state wars. The area of the Persian Empire was rather large, and sometimes it became a tough job ruling it.
When earthquakes occur, a lot of environmental damage takes place. A lot of things are destroyed.
B the great changes brought about when machines and factories replaced animal power and handmade goods
If any trash or anything gets into it then it will travel to the ocean. If sea animals eat the trash they can die.