the idea of a social science

The dams submerge forever the traditional living areas and cause loss of traditional sources of livelihood. A large number of villagers and tribals who have been displaced by various development projects are largely poor. They do not get any benefits from these projects and are alienated from the..

Personal health Characteristics and changes in populations Types of resources Changes in environments Science and technology in local challenge..

Personal health Populations, resources, and environments Natural hazards Risks and benefits Science and technology in societ..

Personal health Populations, resources, and environments Natural hazards Risks and benefits Science and technology in societ..

With the development of more scientific ideas on elements, compounds and mixtures, people began to probe into how and why substances reac..

The central ideas of evolution are that life has a history-it has changed over time-and that different species share common ancestor..

The bacterium that causes this disease is Mycobacterium tuberculosis which is a rod shaped bacteria spread by air, dust, sputum of infected person or even from animals. The bacterium releases a toxin called tuberculin. The disease generally affects lung tissue but may spread to any other part of th..

Question: Why is wind energy maps prepared? Answer: It gives us an idea of the average wind velocity throughout the year at different place..

Laws of Chemical Combination With the development of more scientific ideas on elements, compounds and mixtures, people began to probe into how and why substances react. French chemist A. Lavoisier laid the foundation to the scientific investigation of matter by describing that substan..

Question: What is a 'phylogenetic' tree? Answer: Evolutionary change and relationships of related organisms are represented in "family trees," or 'phylogenetic' trees, which show the relationships among organisms to illustrate the idea that all of life is related. The trees wil..