Siti observed that a plant in a sealed jar of water died after two weeks, even though it had plenty of sunlight and air. What was the most likely reason?
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Worked Solution
Step 1: Identify that the plant has air and light (needs for photosynthesis).
Step 2: Living things also need nutrients to stay healthy.
Step 3: In a jar of plain water, mineral salts are eventually depleted.
Step 4: Final Answer: The plant ran out of nutrients.
Correct answer: The plant ran out of nutrients in the water.
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