In which country is the Okavango Delta nature reserve located?

In which country is the Ordesa y Monte Perdido National Park located? Which national park in the United States is known for its giant sequoia trees? What is the name of the world's largest national park? Which nature reserve in Africa is known for its chimpanzees? The Great Barrier Reef Marine Park is located off the coast of which Australian state? The Andasibe-Mantadia National Park is located in which African island nation? The Wadden Sea nature reserve is located along the coast of which European countries? The Kakadu National Park is a UNESCO World Heritage site located in which Australian state?