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What is a nomad?

What are the most common types of caves?

Are speleothems considered primary or secondary features of caves?

Which are factors (unrelated to evolution) that explain recent technological growth?

Which volcanic gas can lead to sulfuric acid cave formation?

Which acid forms caves from above and which from below?

What is “explanatory power” in science?

Match each Bible passage with its teaching about human value:

What three conditions would be needed to trigger an Ice Age?

What percentage of Earth’s land is covered in ice today and during the Ice Age?