All of these phrases show personification. When the cake is "calling her name", it is really just very tempting to Melissa. The candle isn't really "dancing in the dark", it's actually just flickering. The brown grass isn't really "begging for water", it is just very, very dry. The sun is not "stretching its golden arms", those are just rays of light that are shining across the valley.
Well in theory the gravitation substance can be found in many places in the world but as we all no it is very hard to accumulate. many people have died looking for this but only some succeed but the rewards are crazy im talking unlimited money flight laser beams and much more