PreS-Gr 1—Readers will discover elements of different biomes in this bilingual series. Mountains, deserts, and other ecosystems are introduced through basic facts about the climate, species, and food associated with each setting. The descriptions are about two sentences long, making this an ideal series for very young learners. Full-page photographs alternate with pages of text: Spanish text appears first, and the English translation is noted below it. The quality of translation varies slightly by book; most of the words and phrases used are translated accurately and will resonate with students. Each title includes a photographic "Words to Know" segment at the end. VERDICT The emphasis on observation makes this an inspiring choice for bilingual nature collections.