As they studied the film they noticed some rules of science at work.
rewrite each sentence, adding commas where needed.
I rewrote it like >
As they studied the film, they noticed some rules of science at work.
I agree.
Thank You
You are welcome.
Great job! Your rewrite is correct:
As they studied the film, they noticed some rules of science at work.
By adding a comma after "film," you have properly set off the introductory clause "As they studied the film." This helps to separate the dependent clause from the main clause that follows. Keep up the excellent work!