abstract age ageing autumn background backgrounds balance balanced beautiful beauty biological brown browns close color colorful colors colour colourful colours concept conceptual cycle death decay decline decompose detail drop droplet drops earth earthy ecological element elements end environment environmental essence fade fall fallen floating flora harmony leaf leafs leaves life macro mature moment moments mother natural nature ochre old one organic peace peaceful perfect photo photograph picture plant pleasing pond puddle quiet rain reality red reds resource resources rings ripple ripples season seasonal serene serenity simple simplicity single spiritual stage stream sustainability system systems time tranquil tranquility warm water weather wet yellow yellows