The dependent variable is something that you measure or observe to find out whether there was a difference between your control bottle and experimental bottle. (ex: seed height) What will you be measuring and observing?

in the year 2850, humans successfully colonized mars. the martian modules that were constructed could hold only a small population of people. it is now a century later, and the population on mars has grown to 600 people. of the current mars population, 45 people express the recessive phenotype for phenylketon- uria (pku) syndrome (pp genotype).

explanation:

a = executive branch; b = judicial branch

the answer

b.) bowling ball