"Introduces the cycles of seasons and their impact on Earth. Readers will gain insight into how Earth's tilt plays an important role, how the hemispheres are effected differently, and what happens when seasons are disturbed." -- From publisher's website.
"Introduces the water cycle and its impact on Earth. Readers will gain insight into how water moves around Earth, what water is made from, and how climate change impacts the cycle" -- www.childsworld.com.
"Introduces the plant life cycle. Readers will gain insight into the journey from seed to plant, why plants are important to living things, and how pollution can damage plants." -- From publisher's website.
"Introduces the oxygen cycle and its impact on Earth. Readers will gain insight into how oxygen is created and used, what happens when it combines with other elements, and how human activities have impacted the cycle"--Provided by publisher.