owlpal7 owlpal7

21-05-2020
Biology

contestada

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

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Аноним Аноним

21-05-2020

A. Dissolved oxygen

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Аноним Аноним

21-05-2020

The answer is the third choice, C

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