A hot spot is a region deep within the Earth's mantle from which heat rises through the process of convection. This heat facilitates the melting of rock. The melted rock, known as magma, often pushes through cracks in the crust to form volcanoes. ... Instead it occurs at abnormally hot centers known as mantle plumes.
The trend in life expectancy in india is that it has been rising. But still life expectancy in india compared to the rest of the world is lower because of low economics air pollution and disease
