Answer:
Scientists repeats the steps in cycle mode and in order to be sure about the results he/she chosen.
Because it shows the pull.
hope that helps i’m bad at explaining things
B is the correct answer due to the fact that applied sciences means adding to already developed technology there scientist are creating another drug to cure human diseases by mixing different elements through the process of an experiment
The answer is C. The missing product (A) is water an it combines with carbon dioxide and light to produce glucose (B).