The Stonehenge monument located in the city of Salisbury, England. The large <span>Stonehenge’s </span> stones are called sarsens. They are <span>sandstone blocks and are </span>up to 30 feet (9 meters) tall and weigh 25 tons (22.6 metric tons) on average. According the science they were brought from Marlborough Downs, a distance of 20 miles (32 kilometers) to the north. The name Sarsens comes "Saracen stones". Saracen" was a common name for Muslims<span>, and came by extension to be used for anything regarded as non-Christian, whether Muslim, pagan Celtic, or other.</span>
River System........................
Sand, rocks, and sediment could be carried(erosion) by wind and water
A planetary nebula is a (ring-shaped) type of nebula formed by an expanding shell of gas around an aging star. *a planetary nebula is a type of nebula*. im not completely certain though. i might be wrong.
Answer: Tibet and Hong Kong are currently
under Chinese control.
Explanation: Read from article.