Selective breeding of corn by the Indian peoples of North America produced a high quality food plant. All branches of science are interrelated. Science is based on evidence which could be obtained by other people working in a different place and at a different time under similar conditions. Any procedure which is repeated should give similar results. A group of students all perform the same experiment and discover similarities in their results.
Scientific knowledge is based on experimentation or observation.
The gravitational field strength of the Earth can be determined in the laboratory. Scientific theories must always be tested experimentally. Science does not make absolute predictions or explanations. An electron orbital is a region in space where there is the greatest likelihood of finding an electron. The nature of scientific knowledge and the procedures for generating new scientific knowledge are unique and different from those in other fields of knowledge such as philosophy.