Average time on market: 41 days Certified Pre-Owned: No Transmission: Automatic Color: Onyx Black Description: Used 2012 GMC Yukon XL 1500 SLT 4WD for sale - $16,900, 118,236 miles with Bluetooth, Leather Seats, Backup Camera, Aluminum Wheels, Navigation System.
How long ago did the first living forms appear on earth? the earliest known life form were single celled organisms which roamed the earth they appeared around two billion years ago Answer: The Earth formed about 4.5 billion years â¦ ago. 700 million years later (3.8 to 3.5 billion years age) life started.5 people found this useful.he earliest known life form were single celled organisms which roamed the earth they appeared around two billion years ago Answer: The Earth formed about 4.5 billion years â¦ ago. 700 million years later (3.8 to 3.5 billion years age) life started. 5 people found this useful.
Elizabeth Dohrer, SPACE.com Contributor | September 25, 2012 06:55pm ET. The Soviet Union stunned the world on Nov. 3, 1957, with the launch of Sputnik 2. On board the small satellite was a little dog, Laika, the first animal to orbit Earth. However, Laika was not the first animal in space. The United States and the U.S.S.R. had been putting animals atop rockets since 1947. Laika, a mixed-breed dog, was the first living being in orbit.