Delta - Education | National Geographic Society
2023年11月15日 · As silt builds up, new land is formed. This is the delta. A delta extends a river's mouth into the body of water into which it is emptying. A delta is sometimes divided into two parts: subaqueous and subaerial. The subaqueous part of a delta is underwater. This is the most steeply sloping part of the delta, and contains the finest silt.
delta is one of the fastest-growing centers of China's economy. The Pearl River delta includes both of China's two special administrative regions, the former British colony of Hong Kong and the former Portuguese colony of Macau.
Okavango River Basin - Education
The water of the Okavango Delta begins in the highlands of Angola. It flows down channels and rivers and seeps through peatlands along the Angola-Namibia border and into northern Botswana, where it fans out into one of the world’s most iconic and distinctive inland deltas.
Oh no! This page was snatched by this mandrill. - Education
This endangered mandrill (Mandrillus sphinx) was photographed by National Geographic Photographer Joel Sartore on Bioko Island, Equatorial Guinea, in his ambitious project to document every species in captivity—inspiring people not just to care, but also to help protect these animals for future generations. Before drills disappear, like this webpage has, learn how …
River - Education | National Geographic Society
2023年10月19日 · These deltas and floodplains are highly fertile agricultural zones that offer tremendous value to the surrounding people. In Egypt, for example, the Nile River and its adjacent delta helped give rise to the Egyptian empire that built the pyramids.
Ganges River Basin - Education
2023年10月19日 · As the river empties into the Bay of Bengal, the mouth forms the Ganges River Delta, the largest river delta in the world. The Ganges River is a vital resource to Asia, but it faces many threats. Human and industrial pollutants fill the river in some areas, making it …
Okavango Delta Watershed - Education
2024年8月6日 · Students should determine that it is an inland delta. Then, have students use the map to learn more about the dynamic freshwater system in this delta and watch the video "Sand to Source" for a richer understanding of an Okavango Delta expedition.
The Okavango Delta - Education
2023年10月19日 · The Okavango Delta is one of the most ecologically diverse habitats in the world. Use this infographic to see a few of the thousands of species present in the delta and determine how you believe they would interact with one another.
Okavango Wilderness Project - National Geographic Society
The Okavango Delta is one of the largest freshwater wetlands in southern Africa and is home to over 1,000 species of plants, more than 480 species of birds, 130 species of mammals, and numerous species of reptiles and fish.
Floodplain - National Geographic Society
2023年10月19日 · The process of subsidence, in which the elevation of a delta may sink due to sea-level rise or human activity, often offsets aggradation in the floodplains in these areas. The huge aggradation of sediment around the Nile Delta, for instance, is subsiding due to the rising level of the Mediterranean Sea.