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Title: An ecologist conducts a greenhouse experiment to study the effect of nitrogen concentration on the ... Post by: melaa on Jan 12, 2018 An ecologist conducts a greenhouse experiment to study the effect of nitrogen concentration on the productivity of sunflower seedlings. What is the independent variable in this experiment?
A) productivity of sunflowers B) concentration of nitrogen C) the number of sunflower seeds planted D) the daily amount of water given to each sunflower seed Title: Re: An ecologist conducts a greenhouse experiment to study the effect of nitrogen concentration on ... Post by: By_NeFReT on Jan 12, 2018 Content hidden
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