4. What do you call to a changeable elements of the experiment which can
affect the outcome of the experiment if not carefully controlled? a.
Qualitative elements
b. Quantitative elements
c. Control group
d. Variables
5. What would be the independent (experimental) variable if you are
experimenting different dish soap could clean grease?
a. Dishes
c. grease
b. Dish soap
d. water
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Answer:
4. D variables
5. B dish soap