social science research methods

Afforestation is necessary to get sufficient rainfall for the conservation of soil, plants and animals of the area. In recent days, protection of wild life and management of forests is a difficult task. The conservation of forests includes the following methods: Afforestation - soc..

Indigenous dairy breeds produce 6-8 litres of milk a day where as foreign exotic breeds produce 60 litres of milk a day. Even the lactation period (period when milk is produced) is longer. To improve the production of milk of our Indian cows, crossbreeding programmes are conducted at various dairy ..

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..

Spraying of special chemicals called weedicides or herbicides is a chemical method. Example: atrazine; 2, 4-D, fluchloralin; isoprotu..

Cultural methods of controlling weeds include: proper seed bed preparation timely sowing of crops intercropping and crop rotatio..

Methods of Reproduction - There are basically two types of reproduction - asexual and sexual. This classification is based on the number of parents. Asexual reproduction involves only one parent and the offspring is genetically similar to the parent. Sexual reproduction involves two paren..

In this type of contraception, a physical barrier is placed to prevent the entry of sperms into the uterus. It includes condoms (such as Nirodh) used by males, intrauterine device (IUD) and diaphragm cap used by females. IUD is commonly called loop and is inserted by a doctor into the uterus to ..

There are basically two types of reproduction - asexual and sexual. This classification is based on the number of parent..

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..