Basically all kinds of scientific investigations involve observations in the beginning- based on the observations one makes the hypothesis, which then one tests with the help of experiments.
Answer:
C I believe sorry if I'm wrong please let me know and if not brainliest if that is possible.
Explanation:
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Obama All The Way!
There's To Many Reasons But My Favorite: Obama Awarded "Nobel Peace Prize"
October 9th, 2009
Name Any Other President Who's Been Awarded That