sahara desert
No, the equator does not run through a desert.
The current does not run through any deserts but there are two deserts along the Pacific Ocean where the current does run: Atacama Desert and the Sechura Desert.
There is no Sierra Desert. If you are referring to the Sahara Desert, it is in Africa.
The Nile River passes through the Sahara Desert of North Africa.
The Yellow river
run through the desert for a while until you run into one
No, the Tropic of Capricorn does not pass through the Sahara.
The Kalahari Desert can be found in Botswana and parts of Namibia and South Africa,
Both the Mojave and the Sonoran Deserts.
underground pipes, that also run through oceans
Only one country, Australia. The Gibson Desert is in the state of Western Australia.
The Niger and Nile rivers run through the Sahara Desert.