Darwinʹs mechanism of natural selection required long time spans in order to modify species. From whom did Darwin get the concept of Earthʹs ancient age?

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#Question id: 8961

#9. Diversity of Life Forms

What does recent evidence from molecular systematics reveal about the relationship between grades and clades?

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#Question id: 8962

#9. Diversity of Life Forms

What is characteristic of all ecdysozoans?

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#Question id: 8963

#9. Diversity of Life Forms

What kind of data should probably have the greatest impact on animal taxonomy in the coming decades?

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#Question id: 8964

#9. Diversity of Life Forms

Phylogenetic trees are best described as

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#Question id: 9051

#9. Diversity of Life Forms

What would happen to the seasons if Earth were tilted 35 degrees off its orbital plane instead of the usual 23.5 degrees?

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#Question id: 9052

#8. Inheritance Biology

Which of the following causes seasons on Earth?