What is the name of the desert that covers parts of Saudi Arabia and Yemen?

Which desert is located in the Horn of Africa? What is the name of the largest desert in South America? In which continent is the Namib Desert located? What is the name of the desert that covers parts of China and Mongolia? In which country is the Taklamakan Desert located? What is the name of the largest desert in North America? Which desert covers parts of Peru and Chile? In which continent is the Kalahari Desert located?