How can we help?
You can also find more resources in our
Select a category
Something is confusing
Something is broken
I have a suggestion
What is your email?
What is 1 + 3?
the theory that the continents are moving very slowly
proposed the continental drift theory in 1912
the remains, traces, or imprint of an ancient living thing preserved in rock
a large slowly moving body of snow and ice
a time when Earth was very cold and large areas were covered by glaciers
a large, unbroken area of land
an ancient supercontinent that scientists believe existed from about 200 to 300 million years ago
a single landmass that includes two or more continents