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"All mammals share certain characteristics that set them apart from animal classes. But some mammals live on land and other mammals spend their lives in water--each is adapted to its environment. Land mammals breathe oxygen through nostrils but some marine mammals breathe through blowholes. Compare and contrast mammals that live on land to those that live in the water."--
"All mammals share certain characteristics that set them apart from animal classes. But some mammals live on land and other mammals spend their lives in water--
Life on Earth is endlessly amazing and complex. Learn about animal classification with well-researched, clearly written informational text, primary sources with
Whether described as a vertebrate or reptile, Earth’s animals can be classified and divided in many ways. Readers are introduced to scientific classification
In Mammals, early readers learn about the defining characteristics of this animal group. Vibrant, full-color photos and carefully leveled text will engage early