What are the two types of limiting factors?

The two types of limiting factors are Density - dependent and Density independence.   Density-dependent limiting determinants depends on the community size; the comprehensive population, the consequential influence a density-dependent limiting agent will ought.  Density-independent limiting determinant does not really depend on inhabitants dimension, alternatively they change all populations proportionately. 

A. convection currents in the mantle.is the correct answer