The tropics and the Greenwich Meridian - Writing task

The Tropics are a region of the Earth surrounding the Equator, defined by the Tropic of Cancer in the northern hemisphere and the Tropic of Capricorn in the southern hemisphere. This area is known for its warm climate and is where the sun can be seen directly overhead at least once during the solar year. The Greenwich Meridian, also known as the Prime Meridian, is an important feature because it serves as the starting point for longitude measurement, dividing the eastern and western hemispheres. It is also the reference line from which time zones are calculated, with Greenwich Mean Time (GMT) being the time at the longitude of zero degrees.

North America is a vast continent with a diverse range of geographical features. It includes mountain ranges such as the Rocky Mountains and the Appalachians, extensive plains like the Great Plains, large freshwater bodies including the Great Lakes, and a variety of climates from the arctic conditions of the north to the tropical regions in the south. The USA's key features encompass both human and physical aspects. Physically, it boasts natural wonders like the Grand Canyon, Yellowstone National Park, and the Mississippi River. Human features include significant urban areas such as New York City, technological hubs like Silicon Valley, and cultural landmarks such as the Hollywood film industry.