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Biology, 22.09.2021 01:10 bxbysoso

Sarah is testing the effect of pollution on plants. She has 50 tomato plants. 1 point Group 1 contains 25 plants grown away from the source of pollution. The
other 25 plants, or group 2, grow in the presence of pollution. Sarah makes
sure all of the plants get the same amount of water, sunlight exposure, and
fertilizer. For 1 month, she observe the plants weekly. Her observations
include how the plants look and changes in plant height. Sarah's data
shows that plants in the experimental group all had stunted growth (short)
and poor leaf color (yellow). What is the independent variable? *
Pollution
Sunlight
Fertilizer

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Answers: 3

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