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ways to preform a expermient
problem question
extraneous varbiables things to be done to improve this epermient
independent variable
dependent variable
controlled variable

Isabelle decides to shave a 1 x 2-inch patch of her hair and the same-sized patch of her dog's hair. She then measures the growth every day for three weeks.
Match the following statements below:
What is the effect of species on hair growth?
Shave patches of her hair and her dog's hair and then measure the growth of hair in those patches with a ruler every day for 3 weeks.
The species
The length of hair or the amount of growth Size of shaved patch; length of time hair grows
The dog might not let her be measured. .
Different human hairs grow at different rates; this is not accounted for Add a control group; include more subjects, humans, and more dogs at the same breed; increase the length of time the experiment is conducted.