LEVEL 4: READING ALONE Extent: 32pp, 75 to 100 words per page Text at level 4 has a greater variety of language and types of information than level 3. More challenging vocabulary is introduced. Sentences remain clear, interesting and unambiguous, but are slightly more complex than at lower levels. The Arctic and Antarctica are awe-inspiring places. In this nonfiction chapter book, readers will learn about the animals, plants and people that inhabit them. Important and fascinating facts paired with captivating photographs help make The Arctic and Antarctica a not-to-be-missed journey to some of the most remote and interesting lands in the world.