"Provides comprehensive information on the process of tadpoles changing into frogs"--Provided by publisher.

Why Do Bears Hibernate?

by Darice Bailer

Published 1 January 2009
"Provides comprehensive information on bears and the function of hibernating"--Provided by publisher.

"Provides comprehensive information on the process of caterpillars changing into butterflies"--Provided by publisher.


"Provides comprehensive information on the process of thunder and lightning happening"--Provided by publisher.