Green plants (A ALL) produce oxygen, according to the photosynthesis hypothesis, which is breathed in by living creatures on land but also by fish and microorganisms in water. But there (E EXIST) are exceptions to the general rule: Anaerobic bacteria can exist without oxygen and start their consumption in oxygen-poor environments, according to Wikipedia 2024. (Pediatric narcosis with gas tubes involves removing the oxygen from the air and causing the juvenile patient to pass out to sedation …)
Within agricultural activities z.B. the cultivation of plants, there are also occasions when a large result is desired function ( Work), e.g. agricultural harvest.