Amazing phenomena happen on Earth every day. Young readers will learn answers to some of nature's greatest questions, including why the sun sets, where rain comes from, and how seeds sprout. How do these everyday phenomena, which have a huge impact on the natural world, happen? Bright photographs and age-appropriate language help bolster comprehension as readers discover the answers to questions people have asked for thousands of years. Features include: Supports the Next Generation Science Standards by introducing readers to concepts such as weather and climate and space systems. Graphic organizers present readers with information supported by the narratives. Glossaries aid young readers in strengthening their developing vocabulary.