I think its becuse the shoreline is shalow water that is warmed by the sun? ...... I may be rong
I believe it is A)fuel is more readily available:)
Tomato Suop Creamchsee almonds and pears
It is called exothermic reaction because it releases heat and light and it is called combustion reaction because it is reacting and is being oxidised by O2 to MgO.
It can also be called as oxidation reaction since Mg is oxidised to MgO.