Lyell's Ideas That Gradual, Everyday Geologic Processes Had Shaped Earth

question 78

Multiple Choice

Lyell's ideas that gradual, everyday geologic processes had shaped Earth challenged the prevailing estimate of Earth's age at ____, because ____.​

• A) 6 billion years old; only catastrophic geologic events could sculpt Earth's surface​
• B) ​600 million years old; species needed millions of years to evolve
• C) ​600,000 years old; nobody had observed the evolution of species
• D) ​60,000 years old; geologic processes quickly change landscapes on Earth's surface
• E) ​6,000 years old; such slow geologic processes would take millions of years to sculpt Earth's surface

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