Earth: An Introduction to Physical Geology (12th Edition)

Published by Pearson
ISBN 10: 0134074254
ISBN 13: 978-0-13407-425-2

Chapter 22 - Section 22.7 - Paleozoic Era: Life Explodes - Concept Checks - Page 690: 4

Answer

Amphibians are not considered "true" land animals because they still depend on water for certain stages of their life cycle. They typically lay eggs in water, and the larvae (e.g., tadpoles) develop in aquatic environments before transforming into the adult terrestrial form. Their reliance on water for reproduction and early life stages distinguishes them from fully terrestrial animals.

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