Why are there so few structures still surviving from ancient Mesopotamia? (2 points) Responses All of the structures from this time period were made from clay bricks, and natural erosion has worn most of the small buildings away. All of the structures from this time period were made from clay bricks, and natural erosion has worn most of the small buildings away. Many ruins have long served as quarries for building materials. Many ruins have long served as quarries for building materials. Wars and pillaging of artifacts contribute to the lack of surviving structures. Wars and pillaging of artifacts contribute to the lack of surviving structures. all of the above all of the above

all of the above