English Wikipedia - The Free Encyclopedia. In computer science, a thread of execution is the smallest sequence of programmed instructions that can be managed independently by a scheduler, which is typically a part of the operating system.
Deserts cover more than one fifth of the Earth's land, and they are found on every continent. A place that receives less than 10 inches (25 centimeters) of rain per year is considered a desert. Deserts are part of a wider classification of regions called drylands..
The Sahara in North Africa, is the one of the largest deserts in the world. Antarctica is also a desert, and is larger. It is bounded by the Atlantic Ocean, the Atlas Mountains, the Mediterranean Sea, the Red Sea, and the Sahel region.he Sahara in North Africa, is the one of the largest deserts in the world. Antarctica is also a desert, and is larger. It is bounded by the Atlantic Ocean, the Atlas Mountains, the Mediterranean Sea, the Red Sea, and the Sahel region.