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▹ Answer
<em>B. water cycle</em>
▹ Step-by-Step Explanation
Water is something that is dependent on amongst living things. Without the water cycle, there wouldn't be a source of water and living things wouldn't be able to survive.
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I’m not 100% sure but I think it’s small
The answer should be both
Answer:
If there are no plants in the tank, they will run out of oxygen because there is nothing producing oxygen.
Explanation: