Grassland ecosystems can be found on nearly every continent. Countless animals and plants live in them. So what difference could the loss of one animal species make? Follow the chain reaction, and …
This book tells the inspiring true story of mathematician Katherine Johnson – made famous by the award-winning film Hidden Figures – who counted and computed her way to NASA and helped put a ma…
What do a bird's bones look like? Can all birds fly? Soar through the pages of this book to learn all about birds!
Provides information about food chains and food webs using a question and answer format, discussing such topics as the roles and functions of herbivores, predators, and scavengers.