Q: In which symbiotic relationship does one organism benefit while the other organism is harmed? A. commensalism B. parasitism C. mutualism D. competition A: In parasitism does one organism benefit while the other organism is harmed.
We're going to dig it! ---------------------. Stonehenge Building Materials: For those unfamiliar with the 5 basic rock types at Stonehenge; here is a list of them in chronological order of their first arrival. 85 MYA White Chalk - The outcrop sedimentary rock of Stonehenge is Late Cretaceous Period, Santonian Age, calcium carbonate. Late Cretaceous Period outcrop sedimentary rock is the in situ construction material used by the Stonehenge builders. This material is approximately 85 million years old. This stone is called Seaford Chalk Formation rock. White in color, this building material is from Stonehenge Ditch Mining area. 3100 BC Whitestone - The oldest limestone sedimentary rock of Stonehenge is Early Carboniferous (Mississippian) Period, Arundian Age, calcium carbonate.
What is America's Stonehenge? Built by a Native American Culture or a migrant European population? No one knows for sure. A maze of man-made chambers, walls and ceremonial meeting places, America's Stonehenge is most likely the oldest man-made construction in the United States (over 4000 years old). Like Stonehenge in England, America's Stonehenge was built by ancient people well versed in astronomy and stone construction. It has been determined that the site is an accurate astronomical calendar. It was, and still can be, used to determine specific solar and lunar events of the year.