upsc gs pt pickups | pt pointers

Source-sink dynamics Source–sink dynamics is a theoretical model used by ecologists to describe how variation in habitat quality may affect the population growth or decline of organisms. Since quality is likely to vary among patches of habitat, it is important to consider how a low quality patch might affect a population. In this model, organisms occupy two patches of habitat. One patch, the source, is a high quality habitat that on averag

29 July, 2020
SHARE ARTICLE

Kafala system

Kafala system The kafala system is an exploitative system used to monitor migrant labourers, working primarily in the construction and domestic sectors in Gulf Cooperation Council member states and a few neighbouring countries. The system requires all unskilled labourers to have an in-country sponsor, usually their employer, who is responsible for their visa and legal status. This practice has been criticised by human rights organizations for creating easy opportunities for the exploi