Combustion.
oxygen
Oxygen is a product of photosynthesis that is used by plants and animals for respiration.
plants and animals.
It is constantly being replenished by plants, from the giant 100mtr trees to the tiny algae. These plants convert, by photo-synthesis, the carbon-dioxide breathed out by animals back into oxygen in the atmosphere.
an inference
Oxygen partially dissolves in water. Respiratory systems of aquatic animals are adapted to get this dissolved oxygen. They have gills for respiration.
Animals homes are being destroyed, droughts and oxygen loss
Of course! Animals are used for meat, which is good, and you need plants for oxygen and food.
Oxygen
Oxygen is not released by animals; instead, they consume oxygen during respiration. Animals take in oxygen from the environment, which is used to break down glucose for energy, producing carbon dioxide as a waste product. This carbon dioxide is then expelled back into the environment. In contrast, plants release oxygen as a byproduct of photosynthesis.
Animals breathe oxygen and eat plants.
Animals breathe in oxygen in the air.