Mario studied how far room temperature water would spurt out of a plastic milk carton when 3mm holes were punched at different heights from the bottom of the container.

Identify at least 2 variables that were controlled in this experiment

the areas around the equator

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there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

bradykinin is a physiologically and pharmacologically active peptide of the kinin group of proteins, consisting of nine amino acids.