![subject](/tpl/images/cats/fizika.png)
Regina conducted an investigation to determine whether earthworms add nutrients to soil. She used two pots of soil. She added three earthworms to the first pot. She did not add any earthworms to the second pot, which was the control. Regina tested the nutrient levels of the soil in both pots after two weeks. What type of investigation is Regina conducting? descriptive comparative experimental procedural
![ansver](/tpl/images/cats/User.png)
Answers: 2
Another question on Physics
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 06:30
The energy of a photon was found to be 3.38 × 10–19 j. planck’s constant is 6.63 × 10–34 j • s. which color of light corresponds to this photon?
Answers: 2
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 10:30
Aparticle moves in the xy plane with constant acceleration. at time zero, the particle is at x = 6 m, y = 8.5 m, and has velocity ~vo = (9 m/s) ˆı + (−2.5 m/s) ˆ . the acceleration is given by ~a = (4.5 m/s 2 ) ˆı + (3 m/s 2 ) ˆ . what is the x component of velocity after 3.5 s? answer in units of m/s.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 12:00
In an experiment, how can i change human errors? be specific.
Answers: 1
![question](/tpl/images/cats/fizika.png)
Physics, 22.06.2019 14:00
Explain why you think this diagram shows what happened to the carbon in the biodome.
Answers: 2
You know the right answer?
Regina conducted an investigation to determine whether earthworms add nutrients to soil. She used tw...
Questions
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 02.09.2019 11:10
![question](/tpl/images/cats/istoriya.png)
History, 02.09.2019 11:10
![question](/tpl/images/cats/mat.png)
Mathematics, 02.09.2019 11:10
![question](/tpl/images/cats/istoriya.png)
History, 02.09.2019 11:10
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 02.09.2019 11:10
![question](/tpl/images/cats/mat.png)
Mathematics, 02.09.2019 11:10
![question](/tpl/images/cats/health.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 02.09.2019 11:10
![question](/tpl/images/cats/himiya.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 02.09.2019 11:10
![question](/tpl/images/cats/istoriya.png)
History, 02.09.2019 11:10
![question](/tpl/images/cats/obshestvoznanie.png)
Social Studies, 02.09.2019 11:10