Read the passage and draw a tree diagram showing the classification.
Science is a systematized body of knowledge which collects facts, analyses them and establishes a causal relationship of a particular phenomenon. Science can be divided in to natural and social sciences. Natural science is mainly concerned with the physical world. It includes both physical and biological science physical and biological sciences. Physical sciences consist of physics, chemistry geography, etc., and deal with inanimate or non-living things. Biological science includes biology, zoology, physiology, etc., and deals with the living beings or organism. In natural sciences experiments can be conducted under controlled conditions to find out the causal relationship between different factors or elements to establish a principle or law. Under social sciences we study subject like economics, sociology, History, philosophy, etc. Social science study Interaction of persons with society. It deals with questions concerning social life A person's behaviour in society, that is his social life cannot be experimented under controlled conditions. Therefore, there cannot be exact, precise laws or principles is social science.