Ashley hypothesizes that adding coffee grounds to the soil will help the plants grow faster. She designs a controlled experiment to determine if this hypothesis is supported. She grows one group of soybean seedlings under normal conditions. She mixes three tablespoons of coffee grounds into the soil of the second group and grows the seedlings under the same light, temperature, and watering regimen. After three weeks, she measures the height of the seedlings and compares the two groups. Identify the parts of the experiment. Place only one term in each category. You will not place all the terms.
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Ashley hypothesizes that adding coffee grounds to the soil will help the plants grow faster. She des...
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