The sun and the planets formed together 4,6 billion years ago from clouds of gas and dust called the solar nebula
Earth is composed of four main layers, starting with an inner core at the planet's center, enveloped by the outer core, mantle, and crust. The inner core is a solid sphere made of iron and nickel metals about 759 miles (1,221 kilometers) in radius.
source: nasa
The principle of which relative dating can be used at Siccar Point in Scotland to determine that the rocks below the unconformity were tilted to vertical before erosion occurred is the o<span>riginal horizontality. Thank you for posting your question here. I hope the answer helps. </span>
In other words: they sailed from Hennø in Norway, heading due west towards Greenland, between Shetland and the Faroes and south of Iceland
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From his study in Alexandria, Ptolemy assigned coordinates of latitude and longitude to 8,000 geographic locations, compiling the information into his Geographia, an atlas of world geography that included colored maps depicting regions of the then-known world.
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