Biology

Jocelynn Pratt

8 June, 08:26

Laura performed an experiment to determine the effect of nitrogen-rich fertilizer on plants. The procedure she used in her

experiment is shown below.

1. Select a plant for the project

:

2. Add 5 Tbsp. nitrogen-rich fertilizer to the plant's soil each week

3. Measure plant growth each week

4. Calculate the total growth at the end of a 6-month period

What is wrong with Laura's experiment?

A.

She did not measure how much fertilizer she was giving the plant.

B. She did not use a second plant as a control.

C.

She did not measure the plants growth daily.

D.

She did not set a time limit on how long she was going to continue fertilizing the plant.

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