Then, they do experiments or make observations to see if the predictions are correct. ... A controlled experiment is a scientific test done under controlled conditions, meaning that just one (or ... In fact, there is only one thing that I do differently to the two pots: ... It looks like the "seeds need water" hypothesis is probably correct!
Conditional mood, but not sure
A cover letter is an accompanying letter that serves as
the introduction to your resume. No resume should be
sent without one. The cover letter is individualized for
each position for which you are applying. It is an
extension of your resume and reflects your knowledge
of the employer’s needs.
After test would be your answer for sure :)