The answer will be a plant! Almost ever other organism gets its energy from another organism where as plants get theirs from sunlight, water, oxygen, and other non living things
Its the epidermis because it is subdivided into two layers.
Swim Bladder is the answer for sure
The evolution of the peppered moth is an evolutionary instance of directional colour change in the moth population as a consequence of air pollution during the Industrial Revolution. The frequency of dark-coloured moths increased at that time, an example of industrial melanism. Later, when pollution was reduced, the light-coloured form again predominated. Industrial melanism in the peppered moth was an early test of Charles Darwin's natural selection in action, and remains as a classic example in the teaching of evolution. Sewall Wright described it as "the clearest case in which a conspicuous evolutionary process has actually been observed."
