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07-02-2018
Biology

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Sarah performs an experiment to determine the effect of nitrogen on plants. She studies the effect of nitrogen on the growth of the root hair, height of the plants, and nodule formation. Which factor is an independent variable?

a) Amount of Nitrogen

b) Growth of Root Hair

c) Nodule Formation

d) Height of the Plants

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smilodon smilodon

07-02-2018

When Sarah performed this experiment, she changed the levels of nitrogen in order to observe the changes in the morphological features of the plant.
All of the characteristics of the plant that she observed were dependent on multiple different things, but the level of nitrogen was an independent variable that she was changing at her will.

Answer Link

0020210 0020210

16-01-2020

Answer:a

Explanation:

Answer Link

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