index hlm. 64 ___ Animals share our planet and represent about three-quarters of the species on Earth. Their habitats are diverse and they can be found in grasslands, deserts, mountains, forests, and underwater. They need food and water to live and can sense what goes around them. They need to move from place to place in pursuit of food, mates, or to take refuge from predators. This book …
An invention can be a novel idea, a product, a method, or a composition of all of these. It may even be an improvisation on a skill or an existing machine, for achieving better results. From the first sharp-edged tools to modern weapons, from the wheel to the Mars rovers, from the telephone to the Internet, amazing inventions have revolutionised the way we live. Standing testimony to inte…