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It would be impossible for oxygen requiring organisms to exist before photosynthetic organisms because there was not oxygen in the atmosphere for these organisms to breathe. Photosynthetic organisms take carbon dioxide and water in and create oxygen as waste. Before these photosynthetic organisms existed there was not enough or any oxygen in the atmosphere for organisms requiring oxygen to survive.
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Are all organisms that are photosynthetic are oxygenic?
No, not all photosynthetic organisms are oxygenic. Oxygenic photosynthesis is the main process in which plants, algae, and cyanobacteria produce oxygen as a byproduct. However, there are some photosynthetic bacteria that do not produce oxygen during photosynthesis.
What does The rise of photosynthetic organisms do?
The rise of photosynthetic organisms helped to increase oxygen levels in the Earth's atmosphere, promoting the evolution of more complex life forms. Photosynthetic organisms also play a crucial role in the carbon cycle by converting carbon dioxide into organic compounds, which has a significant impact on the global climate.
What organisms require oxygen for respiration?
Most animals, including humans, require oxygen for respiration. This includes mammals, birds, reptiles, and many invertebrates. Additionally, some bacteria and fungi also require oxygen for their respiration processes.
How does photosynthesis beniffit heterotrophs?
By providing an energy source for them. The majority of heterotrophic organisms get their energy by eating photosynthetic organisms or indirectly, by eating things which themselves eat photosynthetic organisms.
The rise of photosynthetic organisms did not?
The rise of photosynthetic organisms did not happen suddenly, but gradually over billions of years through evolutionary processes. It led to the oxygenation of Earth's atmosphere, which allowed for the development of more complex life forms. This event has had a profound impact on the Earth's environment and ecosystems.
