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natulia [17]
4 years ago
10

How old is the earth​

Biology
2 answers:
viva [34]4 years ago
7 0

The Earth is around 4.6 billion years old. earth has a slightly squashed sphere, measuring 7,973 miles (12,756 km) in the diameter at the equator.

Gnoma [55]4 years ago
4 0

Answer:

4.543 billion years

Explanation:

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Option 2, or B: a way of classifying books

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Dewey Decimal system definition = The Dewey Decimal Classification (DDC), colloquially the Dewey Decimal System, is a proprietary library classification system first published in the United States by Melvil Dewey in 1876.

What is the Dewey Decimal system? Well, the definition says it is a proprietary library classification system.

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Our answer is 2 or B: a way of classifying books.

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