Science is essentially the systematic investigation of nature. Although science can be considered a cultural behaviour, there are elements of science which can be considered 'natural' for example classification of natural objects. These are so-called natural sciences. To do science requires some technological skills, in particular, writing and recording of observations often from measuring instruments compared with calibrated standards.
Science is about providing an explanation for 'How things happen'. How does a light bulb work? for example. Or how do trees grow? Science is able to provide models of explanations that are testable , observable or measurable.
A ruler represents a key feature of science. Can it be measured? image: wikipedia
Science is also about classifying things into types and kinds and trying to establish the way things relate to each other. For example classifying forms of life.
In addition science can also be considered more in a technological in the sense that science allows for the manipulation of the natural world in addition to the observation of the natural world.
Science is also considered a body of knowledge gained from scientific investigations.
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