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How it works

how we use plants

Humans use plants in many ways. We build structures with them. We plant them in and around our homes to enjoy their colors, forms, and fragrance. We study them to learn from them. We eat them and use them to make food products and drinks. We even make our clothes from their fibers. Some of them provi... read more

how the body work

All the organs and systems of your body work together. When they work correctly you move, you fight off germs and diseases, you heal, you learn, you grow, and you age. In other words, you live. ... read more

people who study the human body

People are curious. They wonder, they observe, they study, and they learn. One of their favorite subjects is living things. Biology is the study of living things. And one of the favorite subjects of biologists is the human body. Scientists examine dead bodies to see what is inside. Studying the body... read more

matter

Matter is anything that takes up space and has mass. Atoms or parts of atoms form all matter. It is everything from the tiniest electron to the planets and stars. ... read more

reactions

Chemical Reactions ... read more