In July 2017 an iceberg with an area of about 5,800 sq. km calved from what shelf in Antarctica?
A. Larsen C
B. Larsen B
C. Larsen A
What is the name for the highly viscous layer of the earth that is about 2,890 km (1,800 miles) thick and makes up about 84 percent of Earth's volume?
Which of these is a natural area of roughly 16 square km (6.2 squ miles), which is 5 km (3.1 miles) west of Tuktoyaktuk, Canada, in a coastal region of the Arctic Ocean, which contains approximately 1,350 Arctic ice dome hills?
Technical android & window
Opened in 1890, with 6 stations over 3.2 miles (5.1 km) and running in a pair of tunnels between the City of London and Stockwell passing under the River Thames, what was the first deep-level underground "tube" railway in the world, and the first major railway to use electric traction?