In which country is the Atacama Desert located?

Which desert is the largest continuous sand desert in the world? In which continent is the Patagonia Desert located? What is the name of the desert that covers parts of Algeria, Chad, Egypt, Libya, Mali, Mauritania, Morocco, Niger, and… What is the name of the desert that covers about 270,000 square kilometers in Western Australia? What is the name of the desert that covers parts of South Africa, Namibia, and Botswana? In which continent is the Arabian Desert located? Which desert spans across several countries in North Africa? Which desert is home to the highest population density?