During photosynthesis, unused oxygen atoms form oxygen gas (o2) which is released as a waste product. how did these oxygen atoms originally enter the plant?

kelp are large brown algae that live in cool, relatively shallow waters close to the shore. they grow in dense groupings much like a forest on land. these underwater towers of kelp provide food and shelter for thousands of fish, invertebrates, and marine mammal species.

e) all of the above

not: both offer magnification to the atomic level.