The water we drink today was likely a fluffy cloud not long ago. The fossil fuels we burn come from the bodies of ancient plants and animals. And, many animals will trace the same migratory paths this year that they have for many more. Earth Cycles of birth, death, growth, and decay all interrelate to keep the planet in balance. This series introduces young readers to some of the powerful Earth Cycles. Aligned to Common Core Standards and correlated to state standards. DiscoverRoo is an imprint of Pop!, a division of ABDO.