Question

22. (a) What is the source of oxygen in photosynthesis?​

Answer 1

Answer:

In the process of photosynthesis, phytoplankton release oxygen into the water. Half of the world's oxygen is produced via phytoplankton photosynthesis

Explanation:

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Answer 2

$\huge\bold\green{Answer᭄}$

вч cσmpαrísσn, thє sєcσnd grσup σf plαnts wαs gívєn rαdíσαctívєlч-lαвєlєd cαrвσn díσхídє αnd unlαвєlєd wαtєr. rєsults shσwєd thαt thє σхчgєn rєlєαsєd frσm thє fírst grσup σf plαnts wαs rαdíσαctívє, cσnfírmíng thαt wαtєr ís thє sσurcє σf thє σхчgєn prσducєd вч phσtσsчnthєsís.