asked 208k views
2 votes
Select the correct answer.

What is ozone?
A. dissolved oxygen
B. the main catalyst in photosynthesis
C. a type of oxygen
D. a form of calcium carbonate

2 Answers

4 votes
The answer is the third choice, C
answered
User Huytc
by
8.6k points
1 vote
A. Dissolved oxygen
answered
User Andriy Drozdyuk
by
8.3k points
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