![subject](/tpl/images/cats/biologiya.png)
Sarah wants to know which brand of nail polish lasts the longest without chipping. She buys 4 types of nail polish - Essie (which she normally uses.) Butter, , and Sally HansenEvery Sunday for 4 weeks she paints her nails with a different brand of polish and records how many days she lasts before she gets her first chip. She makes sure to use the same bottom coat and top coat with each type of polish, and she makes sure to do the same weekly routine each week so that her nails aren't getting treated more roughly different weeks. What would be the control and experimental group?
![ansver](/tpl/images/cats/User.png)
Answers: 1
![](/tpl/images/ask_question.png)
![](/tpl/images/ask_question_mob.png)
Another question on Biology
![question](/tpl/images/cats/biologiya.png)
Biology, 21.06.2019 19:00
Iron reacts with oxygen to produce iron oxide (rust). this reaction is represented in an equation as 4fe + xo2 โ 2fe2o3. identify the value of x that will balance the equation.
Answers: 3
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 02:40
What advantage does a crop that undergoes vegetative reproduction have over plants that start from the seed? 1points a they store nutrients. b they can travel farther. c they experience more genetic variation. d they only occur in high-resource environments.
Answers: 1
![question](/tpl/images/cats/biologiya.png)
Biology, 22.06.2019 09:00
Which of the following statements about protists are true? a.they are typically found in moist environments. b.they are all unicellular. c.they have a nucleus. d.they are all multicellular.
Answers: 1
You know the right answer?
Sarah wants to know which brand of nail polish lasts the longest without chipping. She buys 4 types...
Questions
![question](/tpl/images/cats/mat.png)
Mathematics, 01.07.2019 12:30
![question](/tpl/images/cats/mat.png)
Mathematics, 01.07.2019 12:30
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/himiya.png)
Chemistry, 01.07.2019 12:30
![question](/tpl/images/cats/mat.png)
Mathematics, 01.07.2019 12:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/istoriya.png)
![question](/tpl/images/cats/fizika.png)
![question](/tpl/images/cats/istoriya.png)
History, 01.07.2019 12:30
![question](/tpl/images/cats/biologiya.png)
Biology, 01.07.2019 12:30
![question](/tpl/images/cats/en.png)
English, 01.07.2019 12:30
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
![question](/tpl/images/cats/mat.png)
Mathematics, 01.07.2019 12:30
![question](/tpl/images/cats/biologiya.png)
Biology, 01.07.2019 12:30
![question](/tpl/images/cats/biologiya.png)
![question](/tpl/images/cats/en.png)
![question](/tpl/images/cats/istoriya.png)
History, 01.07.2019 12:30