because animals are smarter than what you are and because they use aliminium foil
early organisms created oxygen from other gases in the atomsphere
The products of photosynthesis is used by organisms because they products are glucose and oxygen. Organisms use the oxygen in cellular respiration and the glucose is used for energy.
Food and Oxygen
true
motivation
Yes organisms take oxygen from the air and aquatic organisms take oxygen from the water using their gills. Some do. Most only from one or the other. For example a tuna fish gets pretty much all its oxygen from oxygen dissolved in water. Humans get all our oxygen from the air. Mudskippers get oxygen from both. Yes. Land animals take in oxygen that plants release using their noses. On the other hand, aquatic or marine animals take in oxygen using their gills.
respiration
because it has oxygen and reused by other aquatic organisms
Since some organisms are able to switch metabolic pathways depending on if oxygen is available they have an adaptive advantage. For other organisms if there is no oxygen then there is no respiration.
Biological factor-A living factor that affects the survival of other organisms
Humans (and most, and if, not all other organisms) need nitrogen is to produce protein. Oxygen is used up in respiration to help produce energy used by the human (and other organisms, but not plants) body.
When there is too much phosphate in the water it causes algal blooms. When the decomposers try to break down the phosphate they use up all the oxygen, leaving none for the other organisms. when this happens all the organisms end up dying.