It's man's disorganized use of treating the planet.He destroys forests by cutting down trees ,makes forest fires which affect the flora and fauna of the region.All this increases the atmosphere's temperature causing it to rise ,thus causing global warming.
Most of them came from central africa and west africa.
A rock can form from either sedimentation (things settling at the bottom of water, etc.) igneous (made from cooled magma) or metamorphic (created by extreme heat or pressure) hope i helped :)
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>
The nearest star is Polaris.
