There are 90 different elements, like the oxygen that we breathe, that can be found in nature. When two or more elements combine, they are held together by a chemical bond and form a compound. In 1869, chemist Dmitri Mendeléev organized the elements into a chart that is known as the Periodic Table of Elements.
British scientist Robert Hooke built an early microscope and was the first scientist to observe cells and give them their name. Anton van Leeuwenhoek created the best microscopes of his time and used them to study living organisms. Matthias Schleiden, Theodor Schwann, and Rudolf Virchow created Cell Theory, which says that all living things are made of cells; cells are the smallest part of a living thing; and all cells come from other cells.
Wheat is a plant that most of us eat every day. The flour used to bake bread, cookies, and cakes is made out of wheat. Pasta and pizza crust are made from wheat flour too. We eat wheat in cereals and in snacks. Discover how all this wheat is grown, and how it gets from the field to the factory . . . and then to your kitchen. Discover the story of your food - where it was grown, who grows it, and how it gets to your plate.
Why do animals, plants, and people look like their parents? Learn about heredity, genes, and chromosomes in simple-to-understand language. Discover how the father of heredity, Gregor Mendel, unlocked the secrets of how living things pass down traits to their children.
Students will learn about the latest, cutting edge technology in medicine today. How this technology can diagnose disease, treat those diseases and where medical technology will lead us in the future.
Explores The Different Parts Of The Nervous System, Including The Brain, Spinal Cord, And Central Nervous System.
Do you know the important skills it takes to survive in the jungle? Learn about them in this useful nonfiction reader. With helpful diagrams, vital tips and instructions, vivid images, and a glossary of useful terms, this title will have readers feeling aware and prepared!