Answer:
Sorry, I'm confused there has to be more to it if there is not then there is no true way for anyone to fill in the blanks. <3
common descent means the evolutionary in biology and how they have something linked with their common ancestors.
Answer: i would say the independent variable is the soil and the control variable is the seed because it stays the same in all of them to better understand the experiment while the dependent variable is the fertilizer.
Explanation: i am not completely sure but maybe someone else can also answer to verify it first
Was AA, KK, and TT correct?