I am doing a crossword puzzle that has statements that you write their answers in the right column. I have two that I can't get.

Question

Heart of a scientific investigation
what I have so far: --e-t--
standard of comparison for checking the results of an experiment
what i have so far: c---r--
Please help I can't figure it out

Answer 1

well, the second one might be control

Answer 2

Thanks! Do you have any idea about the second one?

Answer 3

How about QUESTION for the first one?

Answer 4

Ok thanks I got it now thank you! :)

Answer 5

You're welcome.