Biology, 24.09.2020 21:01 Conpolice1309
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?
a control group
an independent variable
a dependent variable
a procedure
Answers: 3
Other questions on the subject: Biology
Biology, 21.06.2019 18:30, brevenb375
How is the male reproductive system different from other body systems? it isn’t necessary to vital signs. it monitors other body systems, and adjusts if necessary. it transports items from one system to another. it is the only system that produces hormones in the male.
Answers: 1
Biology, 22.06.2019 12:30, PayeA264
Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls
Answers: 3
Biology, 22.06.2019 16:30, Ezekielcassese
Which is an example of a vestigial structure? a: paw of a lionb: wing of a birdc: appendix of a humand: tail of a cat(i think it's a but i'm not sure)
Answers: 1
You know the right answer?
Students are experimenting with a substance that they think can be added to soil to increase the num...
Questions in other subjects:
Biology, 29.10.2021 23:00
Mathematics, 29.10.2021 23:00
Engineering, 29.10.2021 23:10
Mathematics, 29.10.2021 23:10
Social Studies, 29.10.2021 23:10
Arts, 29.10.2021 23:20
