American Bullfrogs Invade Swamps and Ponds

American Bullfrogs have invaded several countries around the world; this book follows the successful remove from Yosemite National Park. This series highlights the innovative technology scientists use to track and control this invasive population. Engaging inquiry-based sidebars encourage young readers to think, create, guess, and ask questions. Book includes a table of contents, glossary, index, author biography, and sidebars--