Once we have done with Indian summers and the like, we will have to admit to the fact that the temperature is dropping. Even when it's just the start and end of the day that causes us a slight shiver, proper jumpers are called for.
This is a photographic image, showing what happens when Apples decay. The use of dark background, dark lighting and dark surface that contrasts with the green decaying apple emphasises a sort of death theme in this image. As decay symbolises death.