Select all of the answers that apply. both earthquakes and volcanoes are a result of the sun's energy plate tectonics subduction seafloor spreading

The given blank can be filled with plate tectonics.  

The theory of plate tectonics states that the outer shell of the Earth is differentiated into many plates, which glide over the mantle, that is, the rocky inner layer above the core. The plates function like a rigid and hard shell in comparison to the mantle of the Earth. The tectonic plates give rise to earthquakes and volcanoes.  

as resources become scarce because of population growth, the growth decreases after few years due to lack of resources and food.