Examlex
Explain how planets were made in our Solar System approximately 4.6 billion years ago.
Carboniferous
The Carboniferous is a geologic period and system that extends from about 359 to 299 million years ago, known for its vast coal deposits.
Ordovician
A geologic period and system of the Paleozoic Era, following the Cambrian and preceding the Silurian, marked by significant diversification of life.
Natural Selection
The process by which organisms better adapted to their environment tend to survive and produce more offspring.
Triassic
A geological period that occurred approximately 252 to 201 million years ago, marking the beginning of the Mesozoic Era.
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