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Published in 2013
What did Earth's continents and oceans look like 250 million years ago, or even 1 billion years ago? What do we know about the climate back when our planet formed? EarthViewer is like a time machine for exploring Earth's deep history. Based on the latest scientific research, it lets you scroll...
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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Earth's climate is a complex system controlled by many factors. This Click and Learn will examine the two most important factors: solar radiation and the composition of Earth's atmosphere.
Grade Level   K 1 2 3 4 5 6 7 8 9 10 11 12
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3
The record of life on Earth stretches over 3 billion years. Deep time and Earth history are keys to understanding the present. The record of life on Earth stretches over 3 billion years, with evidence ranging from chemical signatures in rocks and ancient biological molecules to fossils of colossal...
Grade Level   6 7 8 9 10 11 12
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These are some of the animal species Charles Darwin would have seen when he visited the Galapagos Islands.
Grade Level   K 1 2 3
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