1b Work in pairs. Read and check your ideas. The word “science” comes from the Latin word scientia, which means “knowledge”. Science is the system we use to learn about the natural world. Science is based on tests. They show whether a scientist’s explanations for why things happen are right or wrong. The
types of science are known as ‘branches’, e.g. life science (zoology, botany and bio- logy), physical science (chemistry, physics and astronomy), social science (economics, history) and others. This is because they look like branches of a tree.

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