Science is the study of the natural world through observation by watching, listening, observing, and recording. Science is curiosity in thoughtful action of experimenting, testing; analyzing something we see in the natural world that matches the evidence and logical.
A scientific explanation uses observations and measurements to explain something we see in the natural world. Scientific explanations should, or they should at least match as much of the evidence as possible.
In order to select science one must have strong interest in the field. They should have curiosity about subject, ability to observe and logical thinking. They should be hardworking and passionate about field.