Biology

Biology, 19.11.2019 19:31, manou76

Aresearcher is interested in the effects of nitrate and phosphate on plant growth and sets up an experiment in which groups of five plants are given 1, 2, and 3 grams of nitrate and 1, 2, and 3 grams of phosphate in all combinations over a period of one month. the researcher measures plant height and weight at the end of the experiment. what is missing in this experimental design?
question 9 options:

a control

an independent variable

a dependent variable

a constant

answer

Answers: 2

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Biology, 19.09.2019 17:10, sherlyngaspar1p9t3ly

Aresearcher is interested in the effects of nitrate and phosphate on plant growth and sets up an experiment in which groups of five plants are given 1, 2, and 3 grams of nitrate and 1, 2, and 3 grams of phosphate in all combinations over a period of one month. the researcher measures plant height and weight at the end of the experiment. what is missing in this experimental design? a) a control b) an independent variable c) a dependent variable d) a constant

Answers: 1

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