Students are experimenting with a substance that they think can be added to soil to increase the number of flowers a certain plant will make. They set up 20 pots of soil, each planted with the same type of seed. They divide the pots into two groups and add 15 drops of the substance to pots in one group and only 10 drops to pots in the other group. After the plants grow for four weeks, the students count how many flowers each plant has made. What does this experimental investigation lack? anserws A .a control group
B. a dependent variable
C. a procedure
D. an independent variable
Answers: 2
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Classify each statement about effective nuclear charge, zeff, as true or false.
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Acontainer holds 35.8 moles of gas under 10.0 atm of pressure at 70.0 c. what is the volume of the container?
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Students are experimenting with a substance that they think can be added to soil to increase the num...
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