Based on the information provided in this figure, where does the oxygen gas produced by a leaf come from? 
Definitions:
Equal Pay Act
A law aimed at abolishing wage disparity based on sex by ensuring equal pay for equal work among men and women.
Seniority System
A system in which those who have worked longest for an employer are first in line for promotions, salary increases, and other benefits, and are last to be laid off if the workforce must be reduced.
Compensatory Damages
Compensatory Damages are monetary awards given to individuals to compensate for actual loss, damage, or injury, aimed at restoring the injured party to their original position.
Punitive Damages
Compensation awarded to a plaintiff beyond actual damages, intended to punish the defendant for particularly egregious conduct.
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