Answer:
The long part of a nerve cell along which the electrical signal quickly moves.
Explanation:
Unicellular organisms don't have membrane bound organelles
An error is that the scientist did not control their variables. They had one group of people playing the game at 6, and another group playing at 12. This means that other things might have affected the scores other than what was being tested, which was caffeine.
Answer: the answer is evaperation :)
