They are considered so because are the indispensable parts of the nature cycle.Without formation,decay cannot be possible and similarly,formation cannot be possible without decay.In addition to this,THEY ARE IN A CHRONOLOGICAL MANNER SET BY NATURE and that's why cannot be seperated and so together constitute the cycle of nature.
Answer:
Hi how are you doing today Jasmine
Its a plant cell so its similar to an animal cell so its a eukaryotic
Photo receptors are attached to the retina and are most numerous specifically at the fovea
