Question

from where do we obtain oxygen in photosynthesis ​

Answer 1

Answer:

By using the energy of sunlight, plants can convert carbon dioxide and water into carbohydrates and oxygen in a process called photosynthesis. As photosynthesis requires sunlight, this process only happens during the day. We often like to think of this as plants `breathing in carbon dioxide and `breathing out oxygen.

Answer 2

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In plants, algae, and cyanobacteria, photosynthesis releases oxygen. This is called oxygenic photosynthesis and is by far the most common type of photosynthesis used by living organisms. ... These nutrients are oxidized to produce carbon dioxide and water, and to release chemical energy to drive the organism's metabolism...

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