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Biology, 24.11.2020 17:30 hannah1571

2. Which of these could be caused by a single-celled organism? A. John left a bicycle out in the rain, and it began to rust,
B Joe mixed baking soda and vinegar, and it started to bubble,
O C Mikayla left the milk out overnight, and it smelled sour the next day.
D Jenny put sugar into some iced tea and stirred it until she could not see the sugar
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