The United States is the world leader in .

:calculate the sum of the interior angles of a 13-sided polygon.

Some fossils provide evidence to suggest that earth's climate has changed over time. which information can scientists obtain from these fossils? check all that apply

In wegener’s evidence for continental drift, continents were proposed to fit together, such as the east coast of south america with the west coast of europe. east coast of africa. west coast of greenland. lower west coast of africa.