For thousands of years, people have been changing the world's prairies. Now many prairies are in trouble. They are among the most threatened ecosystems on our planet. Will prairies survive?

Part of a 24-book series that covers the four main branches of science: physical science, life science, earth and space science, and science and technology, and covers essential content standards. Students will build their scientific knowledge, increase their content vocabulary, and sharpen critical nonfiction comprehension skills. Books are 6 5/8" x 9 1/8"