A control group of the experiment is the one in which no treatment or intervention is given. So, in your case, the pea plants in which was not subjected any of the fertilizers, will serve as a control group. This is a negative control. A positive control group is the one in which an established treatment is given, which definitely leads to the production of the desired character. So, in your case, a very good well-known fertilizer which has a positive control on the growth of the pea plant, would serve as a positive control.
I think it’s a&c. I could be wrong, but at least try
A group of tissue that work together is a organ
Supongo que solo trata de probar cuál es cuál con una prueba que inventas. eso es muy confuso
Answer:
gases of nitrogen and many more
